HomeMy WebLinkAbout04 - Traffic Study L&J
Traffic Impact Study
for
Gallatin Law &
Justice Center Campus
Master Plan
Bozeman, Montana
February 2016
Prepared For:
ThinkOne
101 East Main Street, Studio One
Bozeman, Montana 59715
Prepared By:
Morrison-Maierle, Inc.
2880 Technology Boulevard West
PO Box 1113
Bozeman, MT 59771-1113
Phone: (406) 587-0721 • Fax: (406) 922-6702
www.m-m.net
MMI Project No. 2200.040.031.000314
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Table of Contents | i
Table of Contents
Chapter 1 – Introduction & Summary
Introduction .................................................. 1-1
Executive Summary ..................................... 1-1
Study Location & Limits ............................ 1-1
Types of Studies Undertaken ................... 1-1
Traffic Volume Forecasts ......................... 1-2
Traffic Operational Analyses .................... 1-2
Principal Findings ..................................... 1-2
Existing Conditions ....................... 1-2
Intersection Sight
Distance Obstructions ......................... 1-2
Traffic Operations ............................... 1-2
Transit Service .................................... 1-3
Pedestrian & Bicyclist Connectivity ..... 1-3
Improvement Needs for
Existing Conditions ....................... 1-3
Intersection Sight
Distance Obstructions ......................... 1-3
Traffic Operations ............................... 1-3
Transit Service .................................... 1-4
Pedestrian & Bicyclist Connectivity ..... 1-4
Findings for
Cumulative Conditions ................. 1-4
Traffic Operations for Two-Way
Stop Controlled Intersections .............. 1-4
Traffic Operations for
Signalized Intersections ...................... 1-4
Secondary Access to
South 15th Avenue ............................. 1-5
Transit Service Considerations ........... 1-5
Pedestrians & Bicyclists
Considerations .................................... 1-6
Improvement Needs for
Cumulative Conditions ................. 1-6
Gallatin Law & Justice Center
Campus Transportation Impacts ......... 1-6
Traffic Operations ............................... 1-6
Emergency Signal Consideration for
South 19th Avenue &
West Dickerson Street ........................ 1-7
Emergency Signal Consideration for
West College Street &
South 16th Avenue .............................. 1-7
Conclusions & Recommendations ............ 1-8
Gallatin Law & Justice
Center Campus ............................ 1-8
Additional Transportation
System Considerations ................. 1-8
Intersection Sight
Distance Obstructions ......................... 1-8
Signalized Intersection
Traffic Operations ................................ 1-9
Emergency Signal Consideration for
South 19th Avenue &
West Dickerson Street ........................ 1-9
Emergency Signal Consideration for
West College Street &
South 16th Avenue .............................. 1-9
West College Street ............................ 1-9
Transit Service .................................. 1-10
Pedestrian & Bicyclist Connectivity ... 1-10
Traffic Control Guidance ............. 1-10
Chapter 2 –
Proposed Campus Master Plan
Project Description ...................................... 2-1
Analysis Timeframe ..................................... 2-4
Trip Generation ............................................ 2-4
Existing Site Trip Generation .................... 2-4
Future Site Trip Generation ...................... 2-5
Historical Population Growth......... 2-5
Projected Gallatin Law &
Justice Center Campus
Employment Growth ..................... 2-6
Future Trip Generation ................. 2-6
Trip Distribution ........................................... 2-7
Modal Split .................................................... 2-7
Trip Assignment ........................................... 2-8
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
ii | Table of Contents
Chapter 3 – Existing Area Conditions
Introduction .................................................. 3-1
Study Area .................................................... 3-1
Gallatin Law & Justice Center Campus .... 3-1
Study Area Roadways & Intersections ..... 3-1
Transportation Network .............................. 3-3
Existing Area Roadway System ............... 3-3
South 19th Avenue (U-1201) ........ 3-3
West College Street (U-1210) ...... 3-3
Intersections ............................................ 3-4
South 19th Avenue &
West Koch Street ......................... 3-4
South 19th Avenue &
West Dickerson Street .................. 3-4
South 19th Avenue &
West College Street ..................... 3-5
West College Street &
South 16th Avenue ....................... 3-5
West College Street &
South 15th Avenue ....................... 3-6
Intersections Summary ................. 3-6
Traffic Volumes ........................................ 3-6
Transit Service ......................................... 3-9
Pedestrians & Bicyclists ......................... 3-11
Chapter 4 – Travel
Demand Forecasting
Future Street Network Projects
Influencing Study Area
Traffic Operations ........................................ 4-1
Traffic Volume
Projections & Assignment .......................... 4-1
Method of Projection ................................ 4-1
Estimated Volumes .................................. 4-2
Chapter 5 – Transportation Analysis
Analysis Scenarios & Methodologies ......... 5-1
Study Scenarios ....................................... 5-1
Analysis Methodologies ............................ 5-1
Two-Way Stop-Controlled
(TWSC) Intersection Analyses ...... 5-2
Signalized Intersection Analyses .. 5-2
Traffic Operations ........................................ 5-2
Existing Conditions Analyses.................... 5-2
Analyses of Estimated 2026
Background & Total Traffic ....................... 5-4
Analyses of Estimated 2036
Background & Total Traffic ....................... 5-4
Chapter 6 – Findings
Findings for Existing Conditions ................ 6-1
Intersection Sight Distance Obstructions .. 6-1
Traffic Operations ..................................... 6-1
Transit Service ......................................... 6-2
Pedestrian & Bicyclist Connectivity ........... 6-2
Improvement Needs for
Existing Conditions ..................................... 6-2
Intersection Sight Distance Obstructions .. 6-2
Traffic Operations ..................................... 6-3
Transit Service ......................................... 6-3
Pedestrian & Bicyclist Connectivity ........... 6-3
Findings for Cumulative Conditions ........... 6-3
Traffic Operations ..................................... 6-3
Two-Way Stop
Controlled Intersections ................ 6-3
Signalized Intersections ................ 6-4
Secondary Access to
South 15th Avenue ................................... 6-5
Multimodal Considerations ....................... 6-5
Transit Service.............................. 6-5
Pedestrians & Bicyclists ................ 6-6
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Table of Contents | iii
Chapter 6 – Findings (cont.)
Improvement Needs for
Cumulative Conditions ................................ 6-6
Gallatin Law & Justice Center Campus
Transportation Impacts ............................ 6-6
Traffic Operations .................................... 6-6
Emergency Signal Consideration for
South 19th Avenue &
West Dickerson Street ............................. 6-7
Emergency Signal Consideration for
West College Street &
South 16th Avenue .................................. 6-8
Chapter 7 –
Conclusions & Recommendations
Conclusions & Recommendations ............. 7-1
Gallatin Law & Justice Center Campus .... 7-1
Additional Transportation
System Considerations ............................ 7-1
Intersection Sight
Distance Obstructions .................. 7-1
Signalized Intersection
Traffic Operations ......................... 7-1
Emergency Signal Consideration
for South 19th Avenue &
West Dickerson Street .................. 7-2
Emergency Signal Consideration for
West College Street &
South 16th Avenue ....................... 7-2
West College Street ..................... 7-2
Transit Service ............................. 7-2
Pedestrian &
Bicyclist Connectivity .................... 7-3
Traffic Control Guidance .......................... 7-3
References
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
iv | Appendices
Appendices
Appendix A
Level of Service Concepts, Analysis Methodologies, & Standards of Significance
Appendix B
Traffic Count Data
Appendix C
Trip Generation Analyses
Appendix D
Capacity & Level of Service Analyses
D-1: 2016 – Existing Conditions
D-2: Estimated 2026 Background Traffic
D-3: Estimated 2026 Total Traffic
D-4: Estimated 2036 Background Traffic
D-5: Estimated 2036 Total Traffic
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
List of Figures | v
List of Figures
Chapter 2 –
Proposed Campus Master Plan
Figure 2-1: Site Location ............................. 2-2
Figure 2-2: Gallatin Law & Justice
Center Campus Master Plan ....................... 2-3
Figure 2-3: Gallatin Law & Justice
Center Primary Trip Distribution................. 2-8
Figure 2-4: Gallatin Law & Justice
Center Campus Estimated Additional
Site Generated Traffic – 2016 to 2026 ....... 2-10
Figure 2-5: Gallatin Law & Justice
Center Campus Estimated Additional
Site Generated Traffic – 2026 to 2036 ....... 2-11
Chapter 3 – Existing Area Conditions
Figure 3-1: Study Area ................................. 3-2
Figure 3-2: Driver’s View of Sight
Distance Obstructions on Northeast
(Left) and Southeast (Right) Corners of
the Intersection of South 19th Avenue &
West Koch Street ......................................... 3-4
Figure 3-3: Driver’s View of Sight
Distance Obstruction on Southeast
Corner of the Intersection of South
19th Avenue & West Dickerson Street ....... 3-5
Figure 3-4: Existing Study Area
Intersection Traffic Control ......................... 3-7
Figure 3-5: Current Daily Traffic ................. 3-8
Figure 3-6: Streamline Transit Routes...... 3-10
Figure 3-7: Pedestrian / Bicyclist
Roadway Crossings................................... 3-12
Chapter 4 – Travel
Demand Forecasting
Figure 4-1: Estimated 2026
Background Traffic ...................................... 4-3
Figure 4-2: Estimated 2026 Total Traffic ..... 4-4
Figure 4-3: Estimated 2036
Background Traffic ...................................... 4-5
Figure 4-4: Estimated 2036 Total Traffic ..... 4-6
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
vi | List of Tables
List of Tables
Chapter 2 –
Proposed Campus Master Plan
Table 2-1: Existing Site Trip
Generation Summary ................................... 2-4
Table 2-2: Bozeman & Gallatin County
Population Trends (1970 – 2014) ................ 2-5
Table 2-3: Projected Gallatin Law &
Justice Center Campus Budgeted FTEs
for 2016, 2026, & 2036 .................................. 2-6
Table 2-4: Gallatin Law & Justice
Center Campus – Future Trip
Generation Summary ................................... 2-7
Chapter 5 – Transportation Analysis
Table 5-1: Existing Study Area
Intersection Weekday Traffic
Operations Summary ................................... 5-3
Table 5-2: Estimated 2026 Background
Traffic Study Area Intersection
Weekday Operations Summary .................. 5-5
Table 5-3: Estimated 2026 Total Traffic
Study Area Intersection Weekday
Operations Summary ................................... 5-6
Table 5-4: Estimated 2036 Background
Traffic Study Area Intersection
Weekday Operations Summary .................. 5-7
Table 5-5: Estimated 2036 Total Traffic
Study Area Intersection Weekday
Operations Summary ................................... 5-8
CHAPTER 1
INTRODUCTION & SUMMARY
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Introduction & Summary | 1-1
Introduction
The intent of this traffic impact study is to assess potential impacts with the proposed modifications and
potential future expansion of the Gallatin Law and Justice Center campus located in Bozeman, Gallatin
County, Montana. The information presented in this report is intended to evaluate the safety and
operational aspects of the transportation system in the area of the campus under existing as well as
anticipated future conditions. Study recommendations and conclusions are intended to provide
guidance with respect to the short- and long-term function of the area transportation system.
Executive Summary
Study Location & Limits
The Gallatin Law and Justice Center campus located in Bozeman, Gallatin County, Montana is jointly
used by the City of Bozeman, Gallatin County, and the 18th Judicial District of the State of Montana
(District Court). The campus is located on Tracts A and B of Certificate of Survey No. 691 in the west
half of the southwest quarter of Section 12, Township 2 South, Range 5 East, Principal Meridian of
Montana. Presently, the campus includes the existing law and justice center building that is jointly used
by the courts and law enforcement, the Gallatin County Detention Center, a re-entry facility, DUI
processing facility, and a document storage facility. Generally, the existing site is bordered by a mixture
of professional offices and higher density residential development to the north and south, residential
properties to the east, and professional offices to the west. The study area is generally bounded by
West Koch Street to the north, West College Street to the south, South 15th Avenue to the east, and
South 19th Avenue to the west.
Types of Studies Undertaken
This traffic impact study evaluated the area transportation system for existing conditions; estimates of
traffic generation and distribution resulting from the Gallatin Law and Justice Center campus; analyses
of projected traffic operations for the years 2026 and 2036; and evaluation of any improvement needs
identified.
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
1-2 | Introduction & Summary
Traffic Volume Forecasts
Traffic growth trends in the project study area were evaluated by comparing existing average daily
traffic (ADT) volume data included in the Bozeman Urban Transportation Plan 1993 Update (Robert
Peccia & Associates, July 1993), Greater Bozeman Area Transportation Plan 2001 Update (Robert
Peccia & Associates, June 2001), GBATP, and available data from the Montana Department of
Transportation (MDT). Trends were compared to historical population and employment growth patterns
as well as areas of development within Bozeman and the surrounding area.
Traffic Operational Analyses
Evaluations of study area intersections were performed based on their current traffic volumes from data
collected in November and December 2015 and the estimated 2026 and 2036 total traffic volume data
to determine their capacity and level of service. Analyses were performed based on procedures found
in the Highway Capacity Manual 2010 (HCM2010) published by the Transportation Research Board
(TRB).
Principal Findings
Existing Conditions
Intersection Sight Distance Obstructions
Based on field observations, there are existing sight distance restrictions on the northeast and
southeast corners of the intersection of South 19th Avenue and West Koch Street created by
vegetation. Likewise, there is also a sight distance obstruction on the southeast corner of the
intersection of South 19th Avenue and West Dickerson Street created by a monument sign for Security
Title Company.
Traffic Operations
The existing two-way stop controlled intersections within the study area are currently operating within
acceptable levels of service, have adequate capacity to meet traffic demands, and no excessive vehicle
queues were identified through the operational analyses. For South 19th Avenue and its intersections
with West Koch Street and West College Street, the traffic signal coordination plan that has been
implemented by the Montana Department of Transportation (MDT) has resulted in favorable operations
for northbound and southbound vehicles on South 19th Avenue during both the weekday AM and PM
peak periods evaluated as a part of this study. Additionally, the intersections as a whole are operating
within acceptable levels of service per City of Bozeman standards during both periods. However, side
street approaches were found to have less than favorable levels of service during some periods.
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Introduction & Summary | 1-3
Transit Service
Transit service is presently available within the study area and route stops are provided on West
College Street during weekdays within relatively close proximity to the Gallatin Law and Justice Center
campus. Pullouts are not currently provided on either South 19th Avenue or West College Street for
transit vehicles. Furthermore, shelters are not currently available within the study area for transit riders
at route stop locations.
Pedestrian & Bicyclist Connectivity
Sidewalks are generally available on both sides of all roadways within the study area; however, they
are not provided on the north side of West College Street from approximately its intersection with
McIntosh Court (±350 feet east of South 19th Avenue) to South 13th Avenue. Sidewalk connectivity is
predominantly lacking on the existing Gallatin Law and Justice Center campus as well. In lieu of a
sidewalk, a multi-use trail is provided on the south side of West College Street. Bike lanes are provided
on South 19th Avenue as well as the segment of West College Street from South 19th Avenue east to
approximately McIntosh Court.
Improvement Needs for Existing Conditions
Intersection Sight Distance Obstructions
Sight distance at the intersection of South 19th Avenue and West Koch Street could be improved
through coordination with the property owners on those corners to prune the existing vegetation to
improve visibility; however, although improving sight distance through pruning of existing vegetation
would be beneficial it is not absolutely necessary at this time.
At the intersection of South 19th Avenue and West Dickerson Street, relocation or modification of the
existing Security Title Company sign on the southeast corner should be considered to improve sight
distance for drivers. Relocation or modification of the existing sign will require coordination between the
City of Bozeman and the property owner.
Traffic Operations
For the deficiencies currently being experienced at the signalized intersections within the study area on
the side street approaches to South 19th Avenue, it may be possible to improve operations with
modifications to the signal coordination plan for the 19th Avenue corridor to reduce delays currently
being experienced for side street approaches. This would require evaluating all of the coordinated
signals along the corridor, which is beyond the scope and intent of this study. If desired, a
comprehensive optimization plan can be developed for the 19th Avenue corridor that reduces delays to
side street approaches while also optimizing system-wide performance.
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
1-4 | Introduction & Summary
Transit Service
Transit service is presently operating relatively effectively without the addition of a bus pullout or
shelters for transit riders. Nevertheless, with the proposed improvements to West College Street these
enhancements should be strongly considered to aid in maintaining effective traffic flow on West College
Street as well as a means of potentially increasing ridership through available amenities.
Pedestrian & Bicyclist Connectivity
It is expected that sidewalks will be included on the north side of West College Street with the slated
improvements from South 19th Avenue to South 8th Avenue. Likewise, sidewalks are included in the
Gallatin Law and Justice Center campus master plan. Additionally, bike lanes are anticipated to be
included with the West College Street improvements as was recently done with widening project for
West College Street from South 19th Avenue westerly to Huffine Lane / West Main Street
(US Highway 191).
Findings for Cumulative Conditions
Traffic Operations for Two-Way Stop Controlled Intersections
At the intersection of South 19th Avenue and West Dickerson Street, slight increases in average
vehicle delay are estimated for the eastbound and westbound approaches in the years 2026 and 2036,
which is to be expected with increasing traffic volumes on South 19th Avenue and potential traffic
growth from the Gallatin Law and Justice Center campus. Even with the rise in traffic volumes, all of the
approaches are projected to operate within acceptable levels of service.
For each of the 2026 and 2036 traffic analyses, left turns on West College Street are estimated to
operate at LOS A during both the AM and PM peak periods. The inclusion of auxiliary left turn lanes
also enables improved through traffic flow on West College Street. Both South 15th Avenue and South
16th Avenue are forecast to operate within acceptable levels of service during both the weekday AM
and PM peak hours through 2036 without any additional geometric improvements.
Traffic Operations for Signalized Intersections
Estimated traffic operations at the intersection of South 19th Avenue and West Koch Street are not
foreseen to change dramatically through the 2026 and 2036 analysis years. As was the case for
existing conditions, the eastbound and westbound approaches are projected to operate at substandard
levels of service during peak periods; however, the intersection as a whole operates at LOS A during
both the AM and PM peak hours even under the estimated 2036 total traffic scenario. Estimated vehicle
queue lengths for the northbound through lanes may potentially block the left turn bay during the
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Introduction & Summary | 1-5
weekday PM peak hour for estimated 2036 total traffic conditions. However, this is dependent on future
traffic volumes, vehicle spacing, signal timing, phase sequencing, and coordination.
Although the intersection of South 19th Avenue and West College Street as a whole is estimated to
operate at LOS D during the weekday PM peak hour for estimated 2036 background and total traffic
conditions, it is marginally over the transition between LOS C and D that occurs at 35 seconds. No
substantial differences are projected over existing conditions for estimated 2026 and 2036 traffic
volumes. Anticipated transportation network changes in the area with increased utilization of West
Garfield Street and potential improvements to West Kagy Boulevard will assist in dispersing traffic
growth the area.
There is the potential that vehicle queues in the southbound through lane could extend to West
Dickerson Street during the PM peak hour; however, as was the case with West Koch Street this is
dependent on future traffic volumes, vehicle spacing, signal timing, phase sequencing, and
coordination. For the eastbound through movements at the intersection of South 19th Avenue and West
College Street, vehicle queues during the weekday AM and PM peak hours may block access to the left
and right turn bays for estimated 2026 and 2036 traffic volumes. This is also the case for northbound
through/through-right movements during the weekday AM and PM peak hours as well as westbound
through movements during the weekday PM peak hour for those analysis years. None of the estimated
vehicle queues on the eastbound, westbound, or northbound approaches are projected to extend to
upstream intersections.
Secondary Access to South 15th Avenue
The Gallatin Law and Justice Center campus master plan includes a secondary access connection to
South 15th Avenue at the northeast corner of the site. The proposed access is to be limited to law
enforcement, emergency services, or public works department personnel and therefore should not have
a significant impact to traffic operations on South 15th Avenue.
Transit Service Considerations
Discussions during the master planning process for the Gallatin Law and Justice Center campus have
included the potential for inclusion of a transit route stop within the campus. Although it is feasible to
include a transit stop with the redevelopment of the site, it would most likely increase travel time for the
Streamline routes. Therefore, an evaluation of how many transit riders are currently traveling to and or
from the law and justice center campus as well as an estimation of potential future ridership would be
recommended. Ultimately, coordination would be necessary among Streamline and the City of
Bozeman on routes and route stops if it is desired to include a direct transit service connection as part
of the Gallatin Law and Justice Center campus master plan. Alternatively, space can be preserved
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
1-6 | Introduction & Summary
within the site plan for a future transit route stop or transfer site (and designated as such for future
reference) to be constructed at a later date as justified by demand.
Pedestrians & Bicyclists Considerations
With the planned West College Street reconstruction between South 19th Avenue and South 8th
Avenue, it is anticipated that the missing sidewalks along the north side of West College Street would
be completed. Additionally, bike lanes are expected to be included on both sides of the roadway as was
recently done on the segment of West College Street between South 19th Avenue and
Huffine Lane / West Main Street (US 191).
The redevelopment of the Gallatin Law and Justice Center campus will incorporate sidewalks
throughout the site where appropriate, including a connection south to the Guenther Building property
adjacent to the southwest corner of the site that is the present location of the Gallatin County Attorney’s
offices. The included sidewalks will complete connections to existing sidewalks on West Dickerson
Street as well as South 16th Avenue, providing a continuous link for pedestrians to and from South 19th
Avenue as well as West College Street. It is expected that locations for bicycle parking will be
incorporated with the site as well.
Improvement Needs for Cumulative Conditions
Gallatin Law & Justice Center Campus Transportation Impacts
The addition of traffic from the proposed modifications and potential expansion of the Gallatin Law and
Justice Center campus is estimated to have very minor impacts on traffic operations within the study
area based on the included traffic analyses. No level of service deficiencies are projected with the
Gallatin Law and Justice Center campus traffic that would require specific mitigation measures due to
the development.
Traffic Operations
As was the case for existing conditions, the deficiencies estimated at the signalized intersections within
the study area on the side street approaches to South 19th Avenue may be potentially mitigated with
modifications to the signal coordination plan for the 19th Avenue corridor to reduce delays forecast for
side street approaches. Again, this would require evaluating all of the coordinated signals along the
corridor, which is beyond the scope and intent of this study. In order to maintain efficient traffic
operations on 19th Avenue, signal coordination plans should be re-evaluated every three to five years.
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Introduction & Summary | 1-7
Where estimated vehicle queues are projected to exceed available storage or could potentially impact
upstream intersections, those locations should be monitored to determine if additional measures need
to be taken to address safety or operational concerns. Mitigation may include providing additional
queue storage for turn bays, modifying signal operations to reduce queues, adding capacity for the
queued movements, or even travel demand management strategies. It is not recommended to take any
action at this time as there a potential changes to the transportation network programmed through the
transportation planning process within Bozeman as well as at the Montana State University campus
that could substantially change traffic patterns in the area of South 19th Avenue as well as West
College Street.
Emergency Signal Consideration for South 19th Avenue & West Dickerson Street
As part of the Gallatin Law and Justice Center campus master planning process, there have been
discussions regarding the need for traffic signal to be installed at the intersection of South 19th Avenue
and West College Street to allow for law enforcement and other emergency services personnel to have
clear access to South 19th Avenue in the event of an emergency. If desired by the City of Bozeman for
emergency access to South 19th Avenue from West Dickerson Street, this would need to be
coordinated with MDT. The justification for a traffic signal under these circumstances is outside of the
normal warrant criteria contained within the Manual on Uniform Traffic Control Devices.
With the current signal timing plan that MDT has instituted on 19th Avenue, vehicle queues during peak
periods do not currently extend from West Koch Street to West Dickerson Street during normal peak
traffic periods nor are they estimated to through the 2026 and 2036 analysis years included as a part of
this study. There is the potential that estimated queues for 2036 traffic conditions during the weekday
PM peak period for the southbound approach at the intersection of South 19th Avenue and West
College Street may extend to West Dickerson Street. However, vehicles should not be stopping in the
middle of intersection as it is a violation of the traffic code. Therefore, the intersection should not be
blocked due to poor traffic operations of upstream signals and/or intersections on South 19th Avenue.
This would negate the need for an emergency signal due to traffic blocking the intersection of South
19th Avenue and West Dickerson Street. Should a crash occur at the intersection, an incident
management plan would be put in-place by the on-scene personnel to control the movement of vehicles
as well as pedestrians and bicyclists as needed.
Emergency Signal Consideration for West College Street & South 16th Avenue
With regard to the consideration of an emergency signal at the intersection of West College Street and
South 16th Avenue, current and projected traffic operations do not identify the need for a traffic signal.
Additionally, upstream vehicle queues are not anticipated to extend to the intersection. These items
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
1-8 | Introduction & Summary
negate the need for an emergency signal due to traffic blocking the intersection of West College Street
and South 16th Avenue. Therefore, the need for a traffic signal at this intersection to provide
emergency access to West College Street from South 16th Avenue would be left to the determination of
the City of Bozeman. As West College Street is classified as an urban system route, this may need to
be coordinated with MDT.
Conclusions & Recommendations
Gallatin Law & Justice Center Campus
The estimated 2026 and 2036 total traffic volumes utilized in the analyses for the study area include the
projected traffic from the proposed modifications and potential expansion of the Gallatin Law and
Justice Center campus. No impacts to study area intersections resulting from traffic generated by the
Gallatin Law and Justice Center campus were identified beyond existing and future deficiencies noted
at the intersection of South 19th Avenue and West Koch Street as well as the intersection of South 19th
Avenue and West College Street. Impacts resulting from traffic generated by the proposed
development can be accommodated by the existing and anticipated future transportation systems with
the included study recommendations.
Additional Transportation System Considerations
Intersection Sight Distance Obstructions
Sight distance at the intersection of South 19th Avenue and West Koch Street could be improved
through coordination with the property owners on those corners to prune the existing vegetation to
improve visibility; however, some level of protection is provided by the traffic signal at the intersection of
South 19th Avenue and West Koch Street to reduce the potential for right angle crashes between
vehicles. This intersection has not had a significant history of crashes in the past; therefore, although
improving sight distance through pruning of existing vegetation would be beneficial it is not absolutely
necessary at this time.
At the intersection of South 19th Avenue and West Dickerson Street, relocation or modification of the
existing Security Title Company sign on the southeast corner should be considered to improve sight
distance for drivers. With improved sight distance, drivers should no longer stop within the marked
crosswalk, keeping it unobstructed for non-motorized users. Relocation or modification of the existing
sign will require coordination between the City of Bozeman and the property owner.
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Introduction & Summary | 1-9
Signalized Intersection Traffic Operations
For the deficiencies currently being experienced at the signalized intersections within the study area on
the side street approaches to South 19th Avenue, it may be possible to improve operations with
modifications to the signal coordination plan for the 19th Avenue corridor to reduce delays currently
being experienced for side street approaches. This would require evaluating all of the coordinated
signals along the corridor, which is beyond the scope and intent of this study. If desired, a
comprehensive optimization plan can be developed for the 19th Avenue corridor that reduces delays to
side street approaches while also optimizing system-wide performance. In lieu of modifying the signal
coordination plan, limited options are available for improving operations for the side street approaches.
Emergency Signal Consideration for South 19th Avenue & West Dickerson Street
As part of the Gallatin Law and Justice Center campus master planning process, there have been
discussions regarding the need for traffic signal to be installed at the intersection of South 19th Avenue
and West College Street to allow for law enforcement and other emergency services personnel to have
clear access to South 19th Avenue in the event of an emergency. If desired by the City of Bozeman for
emergency access to South 19th Avenue from West Dickerson Street, this would need to be
coordinated with MDT. The justification for a traffic signal under these circumstances is outside of the
normal warrant criteria contained within the Manual on Uniform Traffic Control Devices.
Emergency Signal Consideration for West College Street & South 16th Avenue
With regard to the consideration of an emergency signal at the intersection of West College Street and
South 16th Avenue, current and projected traffic operations do not identify the need for a traffic signal.
Therefore, the need for a traffic signal at this intersection to provide emergency access to West College
Street from South 16th Avenue would be left to the determination of the City of Bozeman. As West
College Street is classified as an urban system route, this may need to be coordinated with MDT.
Again, the justification for a traffic signal under these circumstances is outside of the normal warrant
criteria contained within the Manual on Uniform Traffic Control Devices.
West College Street
With the proposed improvements to West College Street between South 19th Avenue and South 8th
Avenue to a minor arterial standard identified as committed major street network (CMSN) project
CMSN-2 in the Greater Bozeman Area Transportation Plan (2007 Update) auxiliary left turn lanes
should be included as right-of-way allows at its intersections with South 15th Avenue and South 16th
Avenue to enable improved through traffic flow on West College Street.
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Gallatin Law & Justice Center Campus Master Plan
1-10 | Introduction & Summary
Transit Service
A transit pullout on West College Street near its intersections with South 15th Avenue and South 16th
Avenue should strongly be considered with the reconstruction of West College Street to preserve
mobility of traffic operations, improve the functionality of transit stops for Streamline, and provide for the
safe accessibility to transit for users. Furthermore, the addition of a shelter for transit riders should be
considered as an enhancement at the transit route stop location.
Discussions during the master planning process for the Gallatin Law and Justice Center campus have
included the potential for inclusion of a transit route stop within the campus. Although it is feasible to
include a transit stop with the redevelopment of the site, it would most likely increase travel time for the
Streamline routes. Therefore, an evaluation of how many transit riders are currently traveling to and or
from the law and justice center campus as well as an estimation of potential future ridership would be
recommended. Ultimately, coordination would be necessary among Streamline and the City of
Bozeman on routes and route stops if it is desired to include a direct transit service connection as part
of the Gallatin Law and Justice Center campus master plan. Alternatively, space can be preserved
within the site plan for a future transit route stop or transfer site (and designated as such for future
reference) to be constructed at a later date as justified by demand.
Pedestrian & Bicyclist Connectivity
With the planned West College Street reconstruction between South 19th Avenue and South 8th
Avenue, it is anticipated that the missing sidewalks along the north side of West College Street would
be completed. Additionally, bike lanes are expected to be included on both sides of the roadway as was
recently done on the segment of West College Street between South 19th Avenue and
Huffine Lane / West Main Street (US 191).
The redevelopment of the Gallatin Law and Justice Center campus will incorporate sidewalks
throughout the site where appropriate, including a connection south to the Guenther Building property
adjacent to the southwest corner of the site that is the present location of the Gallatin County Attorney’s
offices. The included sidewalks will complete connections to existing sidewalks on West Dickerson
Street as well as South 16th Avenue, providing a continuous link for pedestrians to and from South 19th
Avenue as well as West College Street. It is expected that locations for bicycle parking will be
incorporated with the site as well.
Traffic Control Guidance
All traffic control improvements should be installed in accordance with Montana Department of
Transportation, City of Bozeman, and the Manual on Uniform Traffic Control Devices standards.
CHAPTER 2CHAPTER 2CHAPTER 2
PROPOSED CAMPUS MASTER PLAN
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Gallatin Law & Justice Center Campus Master Plan
Proposed Campus Master Plan | 2-1
Project Description
The Gallatin Law and Justice Center campus located in Bozeman, Gallatin County, Montana is jointly
used by the City of Bozeman, Gallatin County, and the 18th Judicial District of the State of Montana
(District Court). The campus is located on Tracts A and B of Certificate of Survey No. 691 in the west
half of the southwest quarter of Section 12, Township 2 South, Range 5 East, Principal Meridian of
Montana. Presently, the campus includes the existing law and justice center building that is jointly used
by the courts and law enforcement, the Gallatin County Detention Center, a re-entry facility, DUI
processing facility, and a document storage facility. Generally, the existing site is bordered by a mixture
of professional offices and higher density residential development to the north and south, residential
properties to the east, and professional offices to the west. The existing site location is shown in
Figure 2-1 on the following page.
The currently proposed Gallatin Law and Justice Center campus master plan includes the following
development schemes:
Maintaining the existing Gallatin County Detention Center with the option
to expand it in the future as needed;
Construct an approximately 119,000 square foot (ft2) Courts Center building;
Construct an approximately 50,000 ft2 Law Enforcement Center building;
Construct an approximately 2,800 ft2 maintenance building; and
Provide for up to 800 total parking spaces on site.
Presently, there are two primary accesses to the site – one from West Dickerson Street to the west and
one from South 16th Avenue to the south. There is also an additional secondary emergency and utility
access at the northeast corner of the site that connects to South 15th Avenue. No new vehicular
accesses open to the public are included with the currently proposed master plan. However,
improvements to the secondary emergency access linking the site to the South 15th Avenue for
Gallatin County and City of Bozeman personnel have been included with the master plan.
Improvements for pedestrian access and circulation have been included in the proposed master plan,
with an additional pedestrian and/or bicyclist connection south to the Guenther Building property
adjacent to the southwest corner of the site that is the location of the Gallatin County Attorney’s offices.
The currently proposed Gallatin Law and Justice Center campus master plan is shown in Figure 2-2 on
page 2-3.
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Gallatin Law & Justice Center Campus Master Plan
2-2 | Proposed Campus Master Plan
Figure 2-1: Site Location
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Gallatin Law & Justice Center Campus Master Plan
Proposed Campus Master Plan | 2-3
Figure 2-2: Gallatin Law & Justice Center Campus Master Plan
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Gallatin Law & Justice Center Campus Master Plan
2-4 | Proposed Campus Master Plan
Analysis Timeframe
Based on current growth trends in the area, the size of the existing and proposed expansion of the
Gallatin Law and Justice Center campus, and to address potential long-term transportation system
needs associated with the site it is estimated that full build-out and staffing of the proposed campus will
occur over approximately 15 to 20 years following completion of the site improvements. Therefore, this
study will assess any impacts the proposed Gallatin Law and Justice Center campus modifications and
expansion may have on the area transportation system by the year 2036.
Trip Generation
Trip generation is a measure or forecast of the number of trips that begin or end at the project site. The
traffic generated is a function of the extent and type of proposed land use. There are a number of
options available for estimating trip generation. Trip generation rates are not available in Trip
Generation, 9th Edition published by the Institute of Transportation Engineers (ITE) for a law and justice
center campus or joint law enforcement, courts, and detention center facilities.
Existing Site Trip Generation
In order to determine trip generation rates for the proposed Gallatin Law and Justice Center campus
master plan, vehicle traffic generation for the existing site was determined through the use of automatic
traffic recorders (ATR’s or road tubes). Data was obtained on entering and exiting vehicular traffic at the
West Dickerson Street and South 16th Avenue accesses to the site to determine average vehicle trip
ends. (Trip ends are defined as a single or one-directional travel movement with either the origin or the
destination of the trip inside the study site.) The traffic count data is provided in Appendix B. From the
traffic count data, trip generation rates for the existing Gallatin Law and Justice Center campus were
determined and are summarized in Table 2-1 below. Analyses are provided in Appendix C.
Table 2-1: Existing Site Trip Generation Summary
Independent
Variable Units
Average Weekday
Trips per Unit
Average Weekday,
AM Peak Hour Trips per Unit
Average Weekday,
PM Peak Hour Trips per Unit
Enter Exit Total Enter Exit Total Enter Exit Total
Budgeted Full-Time
Employees (FTEs) 287.60 4.103 4.103 8.206 0.363 0.163 0.526 0.260 0.401 0.661
50% 50% 100% 69% 31% 100% 39% 61% 100%
Existing Site Totals 1,180 1,180 2,360 104 47 151 75 115 190
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Proposed Campus Master Plan | 2-5
Future Site Trip Generation
With trip generation from the Gallatin Law and Justice Center campus being evaluated as a function of
budgeted full-time employees (FTEs), it is reasonable to infer that any growth in FTEs will be tied to
future population growth as there are additional needs for law enforcement, courts, treatment, and
detention center personnel. Therefore, an evaluation of historical population growth trends was
performed as a part of this study.
Historical Population Growth
Population growth trends in Bozeman as well as Gallatin County were evaluated for consideration in
determining future employment growth on the Gallatin Law and Justice Center campus. The historical
changes in population for both Bozeman and Gallatin County from 1970 to 2014 are shown in Table 2-2
below. As shown in Table 2-2, Bozeman has a weighted average annual growth rate (AGR) of
approximately 2.4% for the 10 year and 2.0% for the 20 year AGR analyses during the period from
1970 to 2010. Gallatin County has a weighted average AGR of approximately 2.7% for the 10 year and
2.6% for the 20 year AGR analyses during the same period.
Table 2-2: Bozeman & Gallatin County Population Trends (1970 – 2014)
Year
Bozeman
Population1
10 Year
Weighted
AGR %
20 Year
Weighted
AGR %
Gallatin County
Population1
10 Year
Weighted
AGR %
20 Year
Weighted
AGR %
1970 18,670 - - 32,505 - -
1980 21,645 1.49% - 42,865 2.81% -
1990 22,660 0.46% 0.97% 50,463 1.65% 2.22%
2000 27,509 1.96% 1.21% 67,831 3.00% 2.32%
2010 37,280 3.09% 2.52% 89,513 2.81% 2.91%
20142 41,660 - - 97,308 - -
Averages - 2.39% 1.95% - 2.71% 2.58%
1Source: Wikipedia, The Free Encyclopedia - "Population of Counties by Decennial Census: 1900 to 1990". United States Census
Bureau. Retrieved November 28, 2014.
2Source: United States Census Bureau – Population Division, Annual Estimates of the Resident Population: April 1, 2010 to July 1, 2014.
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2-6 | Proposed Campus Master Plan
Projected Gallatin Law & Justice Center Campus Employment Growth
The population data shown in Table 2-2 on the previous page was utilized in combination with
budgeted employee data obtained for Gallatin County, City of Bozeman, and State of Montana
agencies located at the Gallatin Law & Justice Center campus site to evaluate existing budgeted
full-time employee densities and estimate future budgeted FTE numbers. Data on budgeted employees
was obtained from the Gallatin County, Montana – Final Operating Budget and Capital Equipment and
Project Budget for Fiscal Year 2015-2016 (Gallatin County, August 2015); City of Bozeman, Montana –
Fiscal Year 2015-2016 Approved Operating and Capital Budget (City of Bozeman, June 2015); and the
State of Montana Judicial Branch, Department of Corrections, and Office of the Public Defender
websites. Future population estimates were made using weighted average AGR values shown in Table
2-2 on the previous page.
Presuming the density of budgeted FTEs at the Gallatin Law and Justice Center campus will remain
effectively the same with respect to population in Gallatin County and the City of Bozeman, budgeted
FTE numbers were forecast for the years 2026 and 2036. The results of the analyses are summarized
in Table 2-3 below. Detailed analyses are provided in Appendix C.
Table 2-3: Projected Gallatin Law & Justice Center Campus Budgeted FTEs for 2016, 2026, & 2036
Year
Utilized
AGR %
Estimated
Bozeman Population
Utilized
AGR %
Estimated Gallatin
County Population
Forecast Total
Budgeted
FTEs
2016 2.82% 44,040 2.11% 101,460 287.60
2026 2.39% 55,790 2.71% 132,610 362.00
2036 1.95% 64,840 2.58% 168,840 438.50
Future Trip Generation
The results of the trip generation study performed for the existing Gallatin Law and Justice Center
campus shown in Table 2-1 on page 2-4 were used in estimated additional trip generation from the
campus through the year 2036. The analyses were divided into two ten year periods – 2016 to 2026
and 2026 to 2036. For the period 2016 to 2026, the data summarized in Table 2-3 shows an increase of
74.40 budgeted FTEs, resulting in an estimated additional 611 vehicles during the average weekday.
Similarly, the period from 2026 to 2036 shows an estimated increase of 76.50 budgeted FTEs for an
estimated additional 628 vehicles during the average weekday. Future trip generation for the Gallatin
Law and Justice Center campus through the year 2036 is summarized in Table 2-4 on the following
page and is included in Appendix C.
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Proposed Campus Master Plan | 2-7
Table 2-4: Gallatin Law & Justice Center Campus – Future Trip Generation Summary
Analysis Period
Forecast
Total
Budgeted
FTEs
Net
Add’l
Units
Average
Weekday Trips
Average Weekday,
AM Peak Hour
Average Weekday,
PM Peak Hour Trips
Enter Exit Total Enter Exit Total Enter Exit Total
2016 – 2026 362.00 74.40 306 305 611 27 12 39 19 30 49
2026 – 2036 438.50 76.50 314 314 628 28 13 41 19 31 50
Total Estimated
Additional Trip Generation 150.90 620 619 1,239 55 25 80 38 61 99
Trip Distribution
Trip distribution and assignment is the process of identifying the probable destinations, directions, and
traffic routes that development related traffic will likely affect. The estimated traffic generated by the
development must be distributed and assigned in order to analyze the impacts on the roadway system
and intersections within the study area. Various methods are available for estimating trip distribution,
including the analogy, trip distribution model, area of influence, origin-destination (O-D), and surrogate
data methods. Trip distribution for the Gallatin Law and Justice Center campus utilizes the analogy
method, which bases the trip distribution on existing travel patterns in the area as it is an existing site
with measurable travel patterns. The trip distribution for the Gallatin Law and Justice Center campus is
shown in Figure 2-3 on the following page.
Modal Split
Modal split refers to how the total number of person trips are divided amongst the various means of
travel such as automobile (both single occupant and carpool), walking, biking, or transit. In most
instances, the automobile is the primary means of travel. However, the other means of travel may
account for a portion of the trips generated by a site. Although transit, bicycling, and pedestrian trips are
anticipated to comprise a portion of campus related trips, vehicular trips are projected to be the
dominant mode of travel.
Vehicular trips can be further classified as primary purpose, pass-by, diverted, and internal. Primary
purpose trips are those where the site is the primary origin or destination, which result in new trips on
the roadway system. Pass-by trips are those that result from traffic passing on an adjacent roadway
that enters the site and then exits, resuming travel in the same direction. As defined in Transportation
and Land Development, 2nd Edition (Stover and Koepke, 2002), diverted trips are those that enter and
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Gallatin Law & Justice Center Campus Master Plan
2-8 | Proposed Campus Master Plan
exit a site that are diverted from a route other than the one to which the site has access. These can be
both trips diverted from an adjacent route as well as those diverted from another route not adjacent to
the site. Internal trips are those that begin and end within the site but do not affect the adjacent
roadways. Pass-by, diverted, and internal trips are not estimated to be a significant portion of trips
generated by the Gallatin Law and Justice Center campus and have been excluded from the analyses.
Figure 2-3: Gallatin Law & Justice Center Campus Primary Trip Distribution
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Gallatin Law & Justice Center Campus Master Plan
Proposed Campus Master Plan | 2-9
Trip Assignment
The assignment of development related traffic provides the information necessary to determine the
level of site related impacts to the area roadway system and intersections. It involves determining the
volume of traffic and its movements along the roadway system and at area intersections. At a minimum,
trip assignment must also consider route choice, how the existing transportation system functions, and
travel times to and from the site. The resulting traffic assignment for the Gallatin Law and Justice
Center campus at the study area intersections is shown in Figure 2-4 on the following page for
estimated additional traffic generated from 2016 to 2026 and in Figure 2-5 on page 2-11 for estimated
additional traffic generated from 2026 to 2036.
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Gallatin Law & Justice Center Campus Master Plan
2-10 | Proposed Campus Master Plan
Figure 2-4: Gallatin Law & Justice Center Campus Estimated Additional Site Generated Traffic – 2016 to 2026
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Gallatin Law & Justice Center Campus Master Plan
Proposed Campus Master Plan | 2-11
Figure 2-5: Gallatin Law & Justice Center Campus Estimated Additional Site Generated Traffic – 2026 to 2036
CHAPTER 3CHAPTER 3CHAPTER 3
EXISTING AREA CONDITIONS
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Gallatin Law & Justice Center Campus Master Plan
Existing Area Conditions | 3-1
Introduction
As part of the process of evaluating potential impacts resulting from the proposed modifications to and
potential future expansion of the Gallatin Law and Justice Center campus, it is necessary to have an
understanding of the existing area conditions. This chapter discusses the existing study area land use
and transportation infrastructure, including the roadway, pedestrian, and bicycle networks; transit
service; traffic volumes and conditions; and existing relevant transportation system management
programs.
Study Area
Gallatin Law & Justice Center Campus
The transportation impacts from a development are largely dependent on its location and size as well
as the characteristics of the surrounding transportation system. The significant impacts to the adjacent
transportation system will generally be within a limited area from the site. The Unified Development
Code for the City of Bozeman dated January 13, 2014 dictates that the study area for a proposed
development include – (1) all major drive accesses that intersect collector or arterial streets or roads;
and (2) all arterial-arterial, collector-collector, and arterial-collector intersections within one-half mile of
the site or as required by the city engineer during the preapplication, concept plan, or informal project
review. The study area for the Gallatin Law and Justice Center campus is shown in Figure 3-1 on the
following page.
Study Area Roadways & Intersections
This study will primarily focus on the arterial and collector roadways within the study area shown in
Figure 3-1 on the following page. Those roadways and corresponding intersections included as a part
of this study include the following:
Roadways
South 19th Avenue (U-1201)
West College Street (U-1210)
Intersections
South 19th Avenue & West Koch Street
South 19th Avenue & West Dickerson Street
South 19th Avenue & West College Street
West College Street & South 16th Avenue
West College Street & South 15th Avenue
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Gallatin Law & Justice Center Campus Master Plan
3-2 | Existing Area Conditions
Figure 3-1: Study Area
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Gallatin Law & Justice Center Campus Master Plan
Existing Area Conditions | 3-3
Transportation Network
Existing Area Roadway System
South 19th Avenue (U-1201)
Within the project study area, South 19th Avenue is classified as a principal arterial roadway by the
Greater Bozeman Area Transportation Plan (2007 Update) (GBATP) prepared by Robert Peccia &
Associates and adopted by the Bozeman Transportation Coordinating Committee on December 17,
2008 and the City of Bozeman on January 20, 2009. It is also a Montana Department of Transportation
(MDT) urban system route (U-1201). South 19th Avenue also comprises a portion of Montana State
Secondary Highway 345 (S-345) from its intersection with Cottonwood Road to approximately midway
between West Graf Street and Stucky Road. 19th Avenue serves as a primary route for commuters
from the outlying areas to Bozeman and the Montana State University (MSU) campus. North 19th
Avenue includes one of Bozeman’s main commercial centers along its corridor from approximately
Durston Road north to Springhill Road.
The segment of South 19th Avenue (U-1201) in the study area is a four-lane, paved roadway separated
by a raised concrete median with curb and gutter on both sides. There are currently two signalized
intersections along South 19th Avenue within the project study area – West Koch Street and West
College Street (U-1210). The remaining side streets and private driveways are stop controlled
approaches. The posted speed limit on South 19th Avenue within the study area is 35 miles per hour.
West College Street (U-1210)
West College Street is a minor arterial roadway as classified by the GBATP, and it is an MDT urban
system route (U-1210). This roadway serves as a primary route to the MSU campus. East of the study
area, West College Street provides a link to the neighborhoods surrounding the MSU campus as well
as to primary north-south routes that lead to the West Main Street and North 7th Avenue commercial
centers.
With the exception of its intersection with South 19th Avenue, West College Street (U-1210) has a
single travel lane in each direction in the study area. Only the portion generally from South 19th Avenue
east approximately 650 feet has curb and gutter on both sides of the roadway. The remaining segment
from west of Grant Chamberlain Drive east to includes approximately four foot (4’) wide paved
shoulders. Within the study area, there is currently one signalized intersection – South 19th Avenue.
The remaining cross street and private driveway intersections in the study area are stop controlled. The
posted speed limit on West College Street within the study area is 25 miles per hour (mph).
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3-4 | Existing Area Conditions
Intersections
South 19th Avenue & West Koch Street
The intersection of South 19th Avenue (U-1201) and West Koch Street is currently signalized, operating
in a two phase mode coordinated with the other traffic signals on the 19th Avenue corridor. The
northbound and southbound approaches include a left turn, thru, and a shared through-right turn lane.
The left turn lanes on the northbound and southbound approaches have a negative offset of
approximately four feet (4’). This means that a queued vehicle in the left turn lane may partially obscure
the sight distance of a driver in the opposing left turn lane.
The eastbound and westbound approaches at the intersection of South 19th Avenue (U-1201) and
West Koch Street each include a single lane to accommodate left and right turns as well as through
movements. There are existing sight distance obstructions for drivers on the westbound approach
created by vegetation on the northeast and southeast corners of the intersection, which are shown in
Figure 3-2 below.
Figure 3-2: Driver’s View of Sight Distance Obstructions on Northeast (Left) and Southeast (Right) Corners of the
Intersection of South 19th Avenue & West Koch Street
South 19th Avenue & West Dickerson Street
South 19th Avenue (U-1201) and West Dickerson Street is currently a two-way stop controlled
intersection with stop control on the eastbound and westbound approaches. Similarly to the intersection
of South 19th Avenue (U-1201) and West Koch Street, the northbound and southbound approaches
include a left turn, thru, and a shared through-right turn lane. Again, the left turn lanes on the
northbound and southbound approaches have a negative offset of approximately four feet (4’). The
eastbound and westbound approaches each include a single lane to accommodate left and right turns
as well as through movements. There is also an existing sight distance obstruction for drivers on the
westbound approach created by a sign on the southeast corner, which is shown in Figure 3-3 on the
following page.
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Gallatin Law & Justice Center Campus Master Plan
Existing Area Conditions | 3-5
Figure 3-3: Driver’s View of Sight Distance Obstruction on Southeast Corner of the
Intersection of South 19th Avenue & West Dickerson Street
South 19th Avenue & West College Street
The intersection of South 19th Avenue (U-1201) and West College Street (U-1210) is signalized
intersection. The eastbound and westbound approaches each include a left turn, thru, and right turn
lane. Similarly, the northbound and southbound approaches each include a left turn, thru, and a shared
through-right turn lane. As with the West Koch Street and West Dickerson Street intersections with
South 19th Avenue, the left turn lanes on the northbound and southbound approaches have a negative
offset of approximately four feet (4’). The existing traffic signal utilizes semi-actuated operation,
including coordination for the South 19th Avenue (U-1201) approaches with the other traffic signals
along the 19th Avenue corridor. Right-turn overlap phase sequencing is provided as well for the right
turn lanes on the eastbound and westbound approaches.
West College Street & South 16th Avenue
West College Street (U-1210) and South 16th Avenue is a T-intersection with stop control on the
southbound South 16th Avenue approach. The southbound approach includes a single lane to
accommodate left and right turns. The eastbound and westbound approaches each include a single
lane to accommodate through as well as left (eastbound) and right (westbound) turn movements.
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Gallatin Law & Justice Center Campus Master Plan
3-6 | Existing Area Conditions
West College Street & South 15th Avenue
West College Street (U-1210) and South 15th Avenue is a two-way stop controlled intersection with
stop control on the northbound and southbound South 15th Avenue approaches. Single lanes presently
exist on all the approaches, accommodating all available vehicular movements.
Intersections Summary
The intersections described in the previous paragraphs are shown in Figure 3-4 on the following page
along with their corresponding traffic control. Existing traffic control is only shown for the intersections
within the study area.
Traffic Volumes
Intersection turning movement counts were conducted during weekday AM and PM peak periods by
Morrison-Maierle, Inc. on Tuesday, November 10; Thursday, November 12; and Thursday,
November 19, 2015. Additionally, road tube traffic volume data were also collected by
Morrison-Maierle, Inc. at various locations during the timeframes noted below:
South 19th Avenue – NB ONLY
South of West Dickerson Street
Count Period: December 1-4, 2015
South 19th Avenue – SB ONLY
North of West Dickerson Street
Count Period: December 1 & 7-9, 2015
West College Street
East of South 16th Avenue
Count Period: December 7-9, 2015
West College Street
West of South 16th Avenue
Count Period: December 7-9, 2015
West Dickerson Street
East of South 19th Avenue
Count Period: December 1-4, 2015
West Dickerson Street
West of South 19th Avenue
Count Period: December 7-9, 2015
West Dickerson Street
Property Boundary of
Gallatin Law & Justice Center Campus
Count Period: November 6-11, 2015
December 1-4, 2015
South 16th Avenue
Property Boundary of
Gallatin Law & Justice Center Campus
Count Period: November 6-11, 2015
December 1-4, 2015
Due to the time of year that traffic counts were conducted, the data was adjusted for seasonal (monthly)
variations using factors available from MDT for vehicle classification counts conducted in 2015. A
summary of the traffic volumes obtained from the counts is shown in Figure 3-5 on page 3-8. The traffic
count data are provided in Appendix B.
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Existing Area Conditions | 3-7
Figure 3-4: Existing Study Area Intersection Traffic Control
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3-8 | Existing Area Conditions
Figure 3-5: Current Daily Traffic
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Existing Area Conditions | 3-9
Transit Service
Streamline currently provides transit service to Belgrade, Bozeman, Four Corners, and MSU. This
service is currently free for all passengers, which creates an incentive for transit ridership. Streamline
offers two weekday routes that provide service along West College Street within the study area – the
Greenline Express route (which primarily serves public commuters between Bozeman and Belgrade)
and the Yellowline University route (which follows a figure eight loop with the MSU campus as a
centralized hub). Additionally, transit service is provided along West College Street via the Yellowline
University route on Saturdays. Late night service is made available by Streamline Thursday through
Saturday, with the Downtown route along South 19th Avenue being available within the study area.
Descriptions of each route within the study area, route stops, and schedules are discussed in the
paragraphs that follow. The routes and stops are shown in Figure 3-6 on the following page.
The Greenline Express route provides transit service during the weekday AM, midday, and PM peak
periods. Within the study area, eastbound route stops are provided at West College Street and
South 15th Avenue at 7:05 a.m., 8:13 a.m., 1:12 p.m., and 6:17 p.m. Westbound route stops are made
at West College Street and South 16th Avenue, which offers a link to the Gallatin Law and Justice
Center campus, at 7:17 a.m., 12:12 p.m., 5:17 p.m., and 6:27 p.m.
The Yellowline University weekday route provides transit service along West College Street with a
westbound route stop at West College Street and South 15th Avenue and an eastbound route stop at
West College Street and Grant Chamberlain Drive within the study area. Beginning at 6:48 a.m. for the
westbound West College Street and South 15th Avenue route stop, scheduled trips arrive
approximately every 30 minutes until 8:18 a.m. Thereafter, hourly route stops occur between 9:18 a.m.
and 4:18 p.m. Thirty-minute service then resumes with the final scheduled stop occurring at
approximately 6:18 p.m. For the eastbound West College Street and Grant Chamberlain Drive route
stop, similar service schedules are provided with 30-minute service occurring from 7:07 – 8:37 a.m. and
4:37 – 6:37 p.m. Weekday hourly service is provided between 8:37 a.m. and 4:37 p.m. On Saturdays,
hourly transit service is provided through the Yellowline University route with westbound scheduled
route stops occurring at West College Street and South 15th Avenue between 8:18 a.m. and 5:18 p.m.
Eastbound route stops occur hourly at West College Street and Grant Chamberlain Drive between
8:37 a.m. and 5:37 p.m.
The Downtown late night service includes schedule route stops at South 19th Avenue and its
intersections with West College Street as well as West Koch Street. Service is available approximately
every 30 minutes beginning at 7:59 p.m. at South 19th Avenue and West College Street and continues
until 2:00 a.m. at South 19th Avenue and West Koch Street.
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3-10 | Existing Area Conditions
Figure 3-6: Streamline Transit Routes
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Existing Area Conditions | 3-11
Pedestrians & Bicyclists
A multi-use trail was recently constructed on the south side of West College Street that links South
Ferguson Avenue (on the north side of Huffine Lane) to the MSU campus at the intersection of West
College Street and South 11th Avenue as had been recommended in the Bozeman Parks, Recreation,
Open Space, and Trails (PROST) Plan (Bozeman Recreation and Parks Advisory Board,
December 17, 2007) (PROST Plan). The West College Street corridor is also shown as a proposed
location for the inclusion of bike lanes. Within the study area, bike lanes are currently provided along
both sides of South 19th Avenue. With the exception of the existing Gallatin Law and Justice Center
campus and the north side of West College Street from its intersection with McIntosh Court (±350 feet
east of South 19th Avenue) to South 13th Avenue, sidewalks are provided within the project study area.
At the time intersection turning movement counts were conducted by Morrison-Maierle, Inc., bicyclist
and pedestrian crossings of study area intersections were also completed. The results of those counts
are provided in Appendix B with the traffic count data. Additionally, they are summarized in Figure 3-7
on the following page.
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3-12 | Existing Area Conditions
Figure 3-7: Pedestrian / Bicyclist Roadway Crossings
TRAVEL DEMAND FORECASTING
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Travel Demand Forecasting | 4-1
Future Street Network Projects Influencing
Study Area Traffic Operations
Within the project study area, the Greater Bozeman Area Transportation Plan (2007 Update) (GBATP)
identifies improvements to West College Street as a committed major street network (CMSN) project.
CMSN-2 includes the reconstruction of West College Street between South 19th Avenue and South 8th
Avenue to a minor arterial standard. No specific roadway section was identified in the transportation plan
for this roadway segment.
Traffic Volume Projections & Assignment
Method of Projection
In order to more accurately reflect the potential impacts from site generated traffic it is necessary to
develop an estimate of non-site related traffic growth during the analysis period. Three primary means
are typically used to estimate growth of non-site generated traffic, including the build-up method, the use
of transportation plans or models, as well as the trends or growth rate method.
The build-up method takes into account traffic growth due to approved or anticipated to be approved
developments in the study area. Transportation plans or models typically provide estimates for traffic
volumes for approximately 20 years into the future. The model volumes are usually provided for average
weekday traffic, but can be converted to peak hour volumes including turning movements. However, the
conversions can produce results that do not accurately reflect real-world conditions. The trends or growth
rate method is commonly used and involves evaluating the historic traffic growth rates within a study
area. The underlying assumption with this method is that historic growth trends will remain approximately
the same and continue in the future.
Traffic growth trends in the project study area were evaluated by comparing existing average daily traffic
(ADT) volume data included in the Bozeman Urban Transportation Plan 1993 Update (Robert Peccia &
Associates, July 1993), Greater Bozeman Area Transportation Plan 2001 Update (Robert Peccia &
Associates, June 2001), GBATP, and available data from the Montana Department of Transportation
(MDT). Trends were compared to historical population and employment growth patterns as well as areas
of development within Bozeman and the surrounding area.
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
4-2 | Travel Demand Forecasting
Estimated Volumes
Estimated traffic volumes for the 2026 and 2036 planning horizons were established by applying traffic
growth projections on the anticipated major street network evaluated as a part of this study and
contributions from traffic generated from the Gallatin Law and Justice Center campus. Estimated future
traffic volumes are shown in the following figures and on the following pages for the stated conditions:
Estimated 2026 Background Traffic | Figure 4-1 (Page 4-3)
Estimated 2026 Total Traffic | Figure 4-2 (Page 4-4)
Estimated 2036 Background Traffic | Figure 4-3 (Page 4-5)
Estimated 2036 Total Traffic | Figure 4-4 (Page 4-6)
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Travel Demand Forecasting | 4-3
Figure 4-1: Estimated 2026 Background Traffic
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
4-4 | Travel Demand Forecasting
Figure 4-2: Estimated 2026 Total Traffic
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Travel Demand Forecasting | 4-5
Figure 4-3: Estimated 2036 Background Traffic
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
4-6 | Travel Demand Forecasting
Figure 4-4: Estimated 2036 Total Traffic
CHAPTER 5
TRANSPORTATION ANALYSIS
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Transportation Analysis | 5-1
Analysis Scenarios & Methodologies
This section documents the methodologies and assumptions used to evaluate traffic operations within
the project study area as well as any transportation impacts resulting from the proposed modifications
and potential future expansion of the Gallatin Law and Justice Center campus. This section contains
information on study scenarios and analysis methodologies.
Study Scenarios
This study presents analyses of the following scenarios:
Existing Conditions
Estimated 2026 Background Traffic
Estimated 2026 Total Traffic
Estimated 2036 Background Traffic
Estimated 2036 Total Traffic
Analysis Methodologies
Transportation system operating conditions are typically described in terms of “level of service”. Level
of service (LOS) is the performance measure used to evaluate the cumulative effects of such things as
travel speed, traffic volumes, roadway and intersection capacity, travel delay, and traffic interruptions.
Operating conditions are designated as LOS A through LOS F, which represents the most favorable to
the least favorable operating conditions.
Level of service for intersections is determined by control delay. Control delay is defined as the total
elapsed time from when a vehicle stops at the end of a queue to the time the vehicle departs from the
stop line. This includes the time required for the vehicle to travel from the last-in-queue position to the
first-in-queue position, including deceleration of vehicles from the free flow speed to the speed of
vehicles in the queue. Appendix A lists the delay/LOS criteria listed in the Highway Capacity Manual
2010 (HCM2010) published by the Transportation Research Board (TRB) for unsignalized and
signalized.
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
5-2 | Transportation Analysis
Two-Way Stop-Controlled (TWSC) Intersection Analyses
Two-way stop-controlled (TWSC) intersection capacity and level of service analyses were performed
using HCS Unsignal, Version 5.6 developed and maintained by the McTrans Center at the University of
Florida. Unsignalized intersection analyses are based on Chapter 19 of the HCM2010. The HCM2010
methodology for evaluating TWSC intersections is based on gap acceptance and conflicting traffic for
vehicles stopped on the minor street approaches. The critical gap (or minimum acceptable gap) is
defined as the minimum time interval in the major street traffic stream that allows entry for one minor
street vehicle. Average control delay and LOS for each approach or lane movements on each approach
are typically reported. Level of service is not defined for the intersection as a whole.
Signalized Intersection Analyses
Signalized intersection capacity and level of service analyses were performed using TEAPAC Complete
2010, Version 8.62 – 12MAY14 Build 01 (TEAPAC) developed and maintained by Strong Concepts.
These analyses are based on HCM analysis methodology for evaluating signalized intersections, which
is based on the “operational analysis” procedure. This technique utilizes 1,900 passenger cars per hour
of green per lane (pcphgpl) as the maximum saturation flow of a single lane at an intersection. This
saturation flow rate is adjusted to account for lane width, on-street parking, conflicting pedestrians,
traffic composition, and shared lane movements. Average delay is calculated by taking a volume-
weighted average of all the delays for all vehicles entering the intersection.
Traffic Operations
Existing Conditions Analyses
Evaluations of existing study area intersections were performed based on their current traffic volumes
from data collected in November and December 2015, geometry, and traffic control to determine their
present capacity and level of service. A signal timing and coordination plan was recently implemented
by the Montana Department of Transportation (MDT) for the signalized intersections on 19th Avenue,
which include West Koch Street and West College Street within the study area. Data on the
coordinated phase timing, time of day cycle lengths, and split times were obtained by
Morrison-Maierle, Inc. from MDT. This data was used in the analyses of existing traffic operations for
the signalized intersection within the study area on South 19th Avenue. The results of the existing
conditions analyses for the study area intersections are summarized in Table 5-1 on the following page.
Appendix D-1 includes the detailed results of the intersection operations analyses.
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Transportation Analysis | 5-3
Table 5-1: Existing Study Area Intersection Weekday Traffic Operations Summary
Intersection
Approach/
Movement
Weekday, AM Peak Hour Weekday, PM Peak Hour
LOS
Delay
(s/veh)
Volume to
Capacity
Ratio, v/c
HCM
95% Queue
(ft) LOS
Delay
(s/veh)
Volume to
Capacity
Ratio, v/c
HCM
95% Queue
(ft)
South 19th
Avenue
&
West Koch
Street
Intersection A 7.5 0.45 - A 6.8 0.46 -
EB LTR D 50.6 0.63 197 C 25.7 0.38 110
WB LTR D 49.3 0.50 152 C 25.8 0.40 116
NB L A 0.3 0.06 2 A 3.7 0.14 12
NB TR A 0.4 0.23 14 A 3.8 0.46 141
SB L A 0.3 0.09 2 A 4.3 0.16 12
SB TR A 0.9 0.41 31 A 3.3 0.37 107
South 19th
Avenue
&
West
Dickerson
Street
EB LTR B 13.6 0.09 6 B 12.1 0.08 6
WB LTR B 10.9 0.09 7 B 11.7 0.21 18
NB L A 9.9 0.02 2 A 9.1 0.04 1
NB TR A - - - A - - -
SB L A 9.2 0.16 4 A 9.2 0.04 1
SB TR A - - - A - - -
South 19th
Avenue
&
West
College
Street
Intersection C 27.3 0.62 - C 32.1 0.71 -
EB L C 31.5 0.19 70 D 41.1 0.28 84
EB T D 53.5 0.86 372 E 56.0 0.67 338
EB R C 33.2 0.33 152 D 39.3 0.26 151
WB L C 33.7 0.34 86 D 43.0 0.56 198
WB T D 41.3 0.43 181 E 64.5 0.87 470
WB R C 27.5 0.08 36 D 39.3 0.29 168
NB L B 16.0 0.16 51 B 18.8 0.51 183
NB TR C 21.0 0.43 394 C 21.6 0.50 564
SB L B 15.2 0.38 122 B 17.5 0.30 100
SB TR B 18.1 0.42 378 C 20.4 0.42 465
W College St
&
S 16th Ave
EB LT A 8.1 0.01 1 A 8.4 0.01 1
WB TR A - - - A - - -
SB LR B 14.7 0.06 4 C 16.6 0.18 4
W College St
&
S 15th Ave
EB LTR A 8.2 0.01 1 A 8.7 0.02 1
WB LTR A 8.9 0.01 1 A 8.3 0.02 1
NB LTR C 16.9 0.08 2 B 14.5 0.05 1
SB LTR C 15.1 0.08 2 C 17.7 0.10 8
EB = Eastbound; WB = Westbound; NB = Northbound; SB = Southbound
L = Left; T = Through; R = Right; LTR = Left-Through-Right; TR = Through-Right; LR = Left-Right
= Substandard Level-of-Service | XXX = Queue Exceeds Available Storage
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
5-4 | Transportation Analysis
Analyses of Estimated 2026 Background & Total Traffic
Capacity and level of service analyses were performed for estimated 2026 background and total traffic
volumes. For the signalized intersections, the same coordinated phase timing, time of day cycle
lengths, and split times were used in the analyses. It is anticipated that the improvements to West
College Street between South 19th Avenue and South 8th Avenue discussed in Chapter 4 will be
completed prior to the year 2026. Those improvements are projected to include auxiliary left turn lanes
at the South 15th Avenue and South 16th Avenue intersections, and they have been included in the
two-way stop controlled analyses for those intersections.
The results of the capacity and level of service analyses for estimated 2026 background traffic are
provided in Table 5-2 on the following page. The detailed analyses are also provided in Appendix D-2.
The summary of estimated 2026 total traffic operations at study area intersections is provided in
Table 5-3 on page 5-6. Detailed analyses for the estimated 2026 total traffic analysis scenario are
provided in Appendix D-3.
Analyses of Estimated 2036 Background & Total Traffic
As was done for existing conditions and estimated 2026 traffic, capacity and level of service analyses
were performed for estimated 2036 background and total traffic volumes. Again, the signalized
intersections were evaluated with the same coordinated phase timing, time of day cycle lengths, and
split times that are presently in-place along the 19th Avenue corridor. The previously mentioned
auxiliary left turn lane installations on West College Street were again included in the two-way stop
controlled analyses for its intersections with South 15th Avenue and South 16th Avenue.
The results of the capacity and level of service analyses for estimated 2036 background traffic are
provided in Table 5-4 on page 5-7. The detailed analyses are also provided in Appendix D-4. The
summary of estimated 2036 total traffic operations at study area intersections is provided in Table 5-5
on page 5-8. Detailed analyses for the estimated 2036 total traffic analysis scenario are provided in
Appendix D-5.
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Transportation Analysis | 5-5
Table 5-2: Estimated 2026 Background Traffic Study Area Intersection Weekday Operations Summary
Intersection
Approach/
Movement
Weekday, AM Peak Hour Weekday, PM Peak Hour
LOS
Delay
(s/veh)
Volume to
Capacity
Ratio, v/c
HCM
95% Queue
(ft) LOS
Delay
(s/veh)
Volume to
Capacity
Ratio, v/c
HCM
95% Queue
(ft)
South 19th
Avenue
&
West Koch
Street
Intersection A 6.9 0.48 - A 6.9 0.51 -
EB LTR D 50.3 0.60 190 C 25.7 0.39 113
WB LTR D 49.1 0.48 149 C 25.9 0.41 119
NB L A 0.3 0.07 2 A 4.1 0.16 13
NB TR A 0.5 0.26 16 A 4.3 0.53 170
SB L A 0.3 0.09 2 A 5.2 0.19 14
SB TR A 1.0 0.44 36 A 3.6 0.43 128
South 19th
Avenue
&
West
Dickerson
Street
EB LTR B 14.7 0.10 7 B 12.7 0.08 6
WB LTR B 11.0 0.09 7 B 12.6 0.23 20
NB L B 10.6 0.03 2 A 9.6 0.04 3
NB TR A - - - A - - -
SB L A 9.6 0.17 14 A 9.7 0.04 3
SB TR A - - - A - - -
South 19th
Avenue
&
West
College
Street
Intersection C 29.1 0.71 - C 33.8 0.78 -
EB L C 29.8 0.20 76 D 40.0 0.29 88
EB T D 54.5 0.87 413 D 54.7 0.68 361
EB R C 31.5 0.34 161 D 36.8 0.26 156
WB L C 32.6 0.37 92 D 42.8 0.60 211
WB T D 39.6 0.43 191 E 64.6 0.87 500
WB R C 25.9 0.08 39 D 38.2 0.30 179
NB L B 17.9 0.20 59 C 21.4 0.60 202
NB TR C 24.8 0.53 492 C 25.2 0.59 714
SB L B 17.9 0.49 142 C 20.4 0.37 117
SB TR C 21.7 0.51 477 C 24.5 0.51 596
W College St
&
S 16th Ave
EB L A 8.2 0.01 1 A 8.6 0.01 1
EB T A - - - A - - -
WB TR A - - - A - - -
SB LR B 13.1 0.05 4 B 14.6 0.15 12
W College St
&
S 15th Ave
EB L A 8.3 0.01 1 A 8.9 0.02 2
EB TR A - - - A - - -
WB L A 9.3 0.02 1 A 8.5 0.02 1
WB TR A - - - A - - -
NB LTR B 14.9 0.07 5 B 13.1 0.04 3
SB LTR B 13.3 0.07 5 C 15.1 0.08 6
EB = Eastbound; WB = Westbound; NB = Northbound; SB = Southbound
L = Left; T = Through; R = Right; LTR = Left-Through-Right; TR = Through-Right; LR = Left-Right
= Substandard Level-of-Service | XXX = Queue Exceeds Available Storage
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
5-6 | Transportation Analysis
Table 5-3: Estimated 2026 Total Traffic Study Area Intersection Weekday Operations Summary
Intersection
Approach/
Movement
Weekday, AM Peak Hour Weekday, PM Peak Hour
LOS
Delay
(s/veh)
Volume to
Capacity
Ratio, v/c
HCM
95% Queue
(ft) LOS
Delay
(s/veh)
Volume to
Capacity
Ratio, v/c
HCM
95% Queue
(ft)
South 19th
Avenue
&
West Koch
Street
Intersection A 6.9 0.49 - A 6.9 0.52 -
EB LTR D 50.4 0.61 192 C 25.7 0.39 113
WB LTR D 49.0 0.48 148 C 25.9 0.41 119
NB L A 0.3 0.07 2 A 4.2 0.16 13
NB TR A 0.5 0.26 16 A 4.4 0.53 174
SB L A 0.3 0.09 2 A 5.3 0.19 14
SB TR A 1.1 0.45 37 A 3.7 0.43 130
South 19th
Avenue
&
West
Dickerson
Street
EB LTR C 15.8 0.11 8 B 13.3 0.09 7
WB LTR B 11.7 0.11 9 B 13.2 0.27 25
NB L B 10.6 0.03 2 A 9.6 0.04 3
NB TR A - - - A - - -
SB L A 9.7 0.19 15 A 9.8 0.05 4
SB TR A - - - A - - -
South 19th
Avenue
&
West
College
Street
Intersection C 29.2 0.71 - C 33.9 0.79 -
EB L C 29.7 0.20 76 D 39.9 0.29 88
EB T D 54.6 0.87 415 D 54.7 0.68 363
EB R C 31.4 0.34 161 D 36.7 0.26 156
WB L C 32.5 0.38 93 D 42.9 0.61 213
WB T D 39.5 0.43 192 E 64.6 0.87 502
WB R C 25.8 0.08 39 D 38.0 0.30 179
NB L B 17.9 0.20 59 C 21.6 0.61 202
NB TR C 25.0 0.53 499 C 25.4 0.60 720
SB L B 18.0 0.49 142 C 20.6 0.37 118
SB TR C 21.8 0.52 482 C 24.7 0.52 603
W College St
&
S 16th Ave
EB L A 8.2 0.01 1 A 8.6 0.01 1
EB T A - - - A - - -
WB TR A - - - A - - -
SB LR B 13.4 0.06 5 C 15.1 0.18 15
W College St
&
S 15th Ave
EB L A 8.4 0.01 1 A 8.9 0.02 2
EB TR A - - - A - - -
WB L A 9.3 0.02 1 A 8.5 0.02 1
WB TR A - - - A - - -
NB LTR B 15.0 0.07 5 B 13.2 0.04 3
SB LTR B 13.4 0.07 5 C 15.1 0.09 6
EB = Eastbound; WB = Westbound; NB = Northbound; SB = Southbound
L = Left; T = Through; R = Right; LTR = Left-Through-Right; TR = Through-Right; LR = Left-Right
= Substandard Level-of-Service | XXX = Queue Exceeds Available Storage
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Transportation Analysis | 5-7
Table 5-4: Estimated 2036 Background Traffic Study Area Intersection Weekday Operations Summary
Intersection
Approach/
Movement
Weekday, AM Peak Hour Weekday, PM Peak Hour
LOS
Delay
(s/veh)
Volume to
Capacity
Ratio, v/c
HCM
95% Queue
(ft) LOS
Delay
(s/veh)
Volume to
Capacity
Ratio, v/c
HCM
95% Queue
(ft)
South 19th
Avenue
&
West Koch
Street
Intersection A 6.6 0.55 - A 7.3 0.59 -
EB LTR D 50.6 0.63 197 C 25.8 0.40 116
WB LTR D 49.4 0.51 154 C 26.0 0.43 124
NB L A 0.5 0.09 2 A 5.1 0.19 15
NB TR A 0.6 0.30 20 A 5.3 0.62 219
SB L A 0.4 0.11 3 A 7.1 0.24 18
SB TR A 1.4 0.52 50 A 4.2 0.50 160
South 19th
Avenue
&
West
Dickerson
Street
EB LTR C 18.5 0.14 11 B 14.6 0.11 8
WB LTR B 12.2 0.12 9 B 14.8 0.31 29
NB L B 11.8 0.03 2 B 10.2 0.05 3
NB TR A - - - A - - -
SB L B 10.3 0.20 17 B 10.7 0.06 5
SB TR A - - - A - - -
South 19th
Avenue
&
West
College
Street
Intersection C 32.4 0.80 - D 38.0 0.88 -
EB L C 27.9 0.21 79 D 38.7 0.32 94
EB T E 55.9 0.89 464 D 53.9 0.70 398
EB R C 29.6 0.35 168 C 33.8 0.26 162
WB L C 31.6 0.42 100 D 43.3 0.66 231
WB T D 37.7 0.43 204 E 64.8 0.88 546
WB R C 24.2 0.08 41 D 36.4 0.32 192
NB L C 20.5 0.27 69 C 27.5 0.76 230
NB TR C 30.8 0.66 651 C 32.5 0.73 985
SB L C 22.3 0.64 168 C 26.0 050 138
SB TR C 27.3 0.65 646 C 32.2 0.66 834
W College St
&
S 16th Ave
EB L A 8.3 0.01 1 A 8.9 0.01 1
EB T A - - - A - - -
WB TR A - - - A - - -
SB LR B 14.3 0.07 5 C 16.4 0.20 16
W College St
&
S 15th Ave
EB L A 8.5 0.01 1 A 9.1 0.02 2
EB TR A - - - A - - -
WB L A 9.7 0.02 2 A 8.7 0.02 2
WB TR A - - - A - - -
NB LTR C 16.7 0.09 7 B 14.1 0.05 4
SB LTR B 14.2 0.07 5 C 16.4 0.10 7
EB = Eastbound; WB = Westbound; NB = Northbound; SB = Southbound
L = Left; T = Through; R = Right; LTR = Left-Through-Right; TR = Through-Right; LR = Left-Right
= Substandard Level-of-Service | XXX = Queue Exceeds Available Storage
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
5-8 | Transportation Analysis
Table 5-5: Estimated 2036 Total Traffic Study Area Intersection Weekday Operations Summary
Intersection
Approach/
Movement
Weekday, AM Peak Hour Weekday, PM Peak Hour
LOS
Delay
(s/veh)
Volume to
Capacity
Ratio, v/c
HCM
95% Queue
(ft) LOS
Delay
(s/veh)
Volume to
Capacity
Ratio, v/c
HCM
95% Queue
(ft)
South 19th
Avenue
&
West Koch
Street
Intersection A 6.6 0.56 - A 7.4 0.59 -
EB LTR D 50.6 0.63 198 C 25.8 0.40 116
WB LTR D 49.4 0.51 154 C 26.0 0.43 124
NB L A 0.5 0.09 2 A 5.1 0.20 15
NB TR A 0.6 0.31 20 A 5.4 0.63 223
SB L A 0.4 0.11 3 A 7.3 0.24 18
SB TR A 1.5 0.53 51 A 4.2 0.51 162
South 19th
Avenue
&
West
Dickerson
Street
EB LTR C 20.8 0.16 13 C 15.5 0.12 9
WB LTR B 12.7 0.15 11 C 15.7 0.36 36
NB L B 11.8 0.03 2 B 10.2 0.05 3
NB TR A - - - A - - -
SB L B 10.5 0.23 19 B 10.8 0.08 6
SB TR A - - - A - - -
South 19th
Avenue
&
West
College
Street
Intersection C 32.6 0.81 - D 38.2 0.88 -
EB L C 27.8 0.21 79 D 38.7 0.32 94
EB T E 56.0 0.89 466 D 53.9 0.71 401
EB R C 29.5 0.34 168 C 33.6 0.26 162
WB L C 31.6 0.42 101 D 43.4 0.67 233
WB T D 37.6 0.43 204 E 64.8 0.88 550
WB R C 24.1 0.08 41 D 36.2 0.32 192
NB L C 20.6 0.27 69 C 27.9 0.77 230
NB TR C 31.2 0.67 661 C 33.0 0.74 995
SB L C 22.5 0.64 168 C 26.3 0.51 138
SB TR C 27.6 0.65 651 C 32.6 0.66 845
W College St
&
S 16th Ave
EB L A 8.4 0.02 1 A 8.9 0.01 1
EB T A - - - A - - -
WB TR A - - - A - - -
SB LR B 14.6 0.08 6 C 16.9 0.23 20
W College St
&
S 15th Ave
EB L A 8.5 0.01 1 A 9.2 0.02 2
EB TR A - - - A - - -
WB L A 9.7 0.02 2 A 8.8 0.02 2
WB TR A - - - A - - -
NB LTR C 16.7 0.09 7 B 14.2 0.05 4
SB LTR B 14.3 0.07 5 C 16.5 0.10 7
EB = Eastbound; WB = Westbound; NB = Northbound; SB = Southbound
L = Left; T = Through; R = Right; LTR = Left-Through-Right; TR = Through-Right; LR = Left-Right
= Substandard Level-of-Service | XXX = Queue Exceeds Available Storage
CHAPTER 6
FINDINGS
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Findings | 6-1
Findings for Existing Conditions
Intersection Sight Distance Obstructions
Based on field observations, there are existing sight distance restrictions on the northeast and
southeast corners of the intersection of South 19th Avenue and West Koch Street created by
vegetation as shown in Figure 3-2 on page 3-4. Likewise, there is also a sight distance obstruction on
the southeast corner of the intersection of South 19th Avenue and West Dickerson Street created by a
monument sign for Security Title Company, which is shown in Figure 3-3 on page 3-5. The location of
this sign requires drivers to stop within the marked crosswalk in order to see approaching vehicles from
the south on South 19th Avenue.
Traffic Operations
The existing two-way stop controlled intersections within the study area are currently operating within
acceptable levels of service, have adequate capacity to meet traffic demands, and no excessive vehicle
queues were identified through the operational analyses. For South 19th Avenue and its intersections
with West Koch Street and West College Street, the traffic signal coordination plan that has been
implemented by the Montana Department of Transportation (MDT) has resulted in favorable operations
for northbound and southbound vehicles on South 19th Avenue during both the weekday AM and PM
peak periods evaluated as a part of this study. Additionally, the intersections as a whole are operating
within acceptable levels of service per City of Bozeman standards during both periods. However, side
street approaches were found to have less than favorable levels of service during some periods.
During the weekday AM peak hour, both the eastbound and westbound approaches at the intersection
of South 19th Avenue and West Koch Street were found to be operating at level of service (LOS) D. At
the intersection of South 19th Avenue and West College Street, substandard levels of service were
identified during both the weekday AM and PM peak periods. Through movements on the eastbound
and westbound approaches were found to experience less than favorable levels of service during the
weekday AM peak hour, each experiencing LOS D. Additionally, the estimated maximum queue length
(with 95% certainty) was projected to exceed the available queue storage for eastbound through
movements. During the weekday PM peak hour, all movements on both the eastbound and westbound
approaches were found to have substandard levels of service. Turn movements, both left and right,
were determined to be operating at LOS D in both directions while through movements are presently
functioning at LOS E.
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
6-2 | Findings
Transit Service
Transit service is presently available within the study area and route stops are provided on West
College Street during weekdays within relatively close proximity to the Gallatin Law and Justice Center
campus. Pullouts are not currently provided on either South 19th Avenue or West College Street for
transit vehicles. Furthermore, shelters are not currently available within the study area for transit riders
at route stop locations.
Pedestrian & Bicyclist Connectivity
Sidewalks are generally available on both sides of all roadways within the study area; however, they
are not provided on the north side of West College Street from approximately its intersection with
McIntosh Court (±350 feet east of South 19th Avenue) to South 13th Avenue. Sidewalk connectivity is
predominantly lacking on the existing Gallatin Law and Justice Center campus as well. In lieu of a
sidewalk, a multi-use trail is provided on the south side of West College Street. Bike lanes are provided
on South 19th Avenue as well as the segment of West College Street from South 19th Avenue east to
approximately McIntosh Court.
Improvement Needs for Existing Conditions
Intersection Sight Distance Obstructions
Sight distance at the intersection of South 19th Avenue and West Koch Street could be improved
through coordination with the property owners on those corners to prune the existing vegetation to
improve visibility; however, some level of protection is provided by the traffic signal at the intersection of
South 19th Avenue and West Koch Street to reduce the potential for right angle crashes between
vehicles. This intersection has not had a significant history of crashes in the past; therefore, although
improving sight distance through pruning of existing vegetation would be beneficial it is not absolutely
necessary at this time.
At the intersection of South 19th Avenue and West Dickerson Street, relocation or modification of the
existing Security Title Company sign on the southeast corner should be considered to improve sight
distance for drivers. With improved sight distance, drivers should no longer stop within the marked
crosswalk, keeping it unobstructed for non-motorized users. Relocation or modification of the existing
sign will require coordination between the City of Bozeman and the property owner.
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Findings | 6-3
Traffic Operations
For the deficiencies currently being experienced at the signalized intersections within the study area on
the side street approaches to South 19th Avenue, it may be possible to improve operations with
modifications to the signal coordination plan for the 19th Avenue corridor to reduce delays currently
being experienced for side street approaches. This would require evaluating all of the coordinated
signals along the corridor, which is beyond the scope and intent of this study. If desired, a
comprehensive optimization plan can be developed for the 19th Avenue corridor that reduces delays to
side street approaches while also optimizing system-wide performance. In lieu of modifying the signal
coordination plan, limited options are available for improving operations for the side street approaches.
Transit Service
Transit service is presently operating relatively effectively without the addition of a bus pullout or
shelters for transit riders. Nevertheless, with the proposed improvements to West College Street these
enhancements should be strongly considered to aid in maintaining effective traffic flow on West College
Street as well as a means of potentially increasing ridership through available amenities.
Pedestrian & Bicyclist Connectivity
It is expected that sidewalks will be included on the north side of West College Street with the slated
improvements from South 19th Avenue to South 8th Avenue. Likewise, sidewalks are included in the
Gallatin Law and Justice Center campus master plan as shown in Figure 2-2 on page 2-3. Additionally,
bike lanes are anticipated to be included with the West College Street improvements as was recently
done with widening project for West College Street from South 19th Avenue westerly to
Huffine Lane/West Main Street (US Highway 191).
Findings for Cumulative Conditions
Traffic Operations
Two-Way Stop Controlled Intersections
At the intersection of South 19th Avenue and West Dickerson Street, slight increases in average
vehicle delay are estimated for the eastbound and westbound approaches in the years 2026 and 2036,
which is to be expected with increasing traffic volumes on South 19th Avenue and potential traffic
growth from the Gallatin Law and Justice Center campus. Even with the rise in traffic volumes, all of the
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
6-4 | Findings
approaches are projected to operate within acceptable levels of service. The most significant change is
for the eastbound, West Dickerson Street approach with an estimated LOS C during the AM peak hour.
The projected average delay is 20.8 seconds per vehicle for estimated 2036 total traffic conditions
during this time period. This estimated delay is well within the 15.1 – 25.0 seconds range for LOS C.
As noted in Chapter 5 – Transportation Analysis, it is anticipated that the reconstruction of West
College Street to a minor arterial standard between South 19th Avenue and South 8th Avenue included
in the GBATP under CMSN-2 will have been completed by the year 2026. It is anticipated that those
improvements to West College Street would include auxiliary left turn lanes at its intersections with
South 15th Avenue and South 16th Avenue. For each of the 2026 and 2036 traffic analyses, left turns
on West College Street are estimated to operate at LOS A during both the AM and PM peak periods.
The inclusion of auxiliary left turn lanes also enables improved through traffic flow on West College
Street. Both South 15th Avenue and South 16th Avenue are forecast to operate within acceptable
levels of service during both the AM and PM peak hours through 2036 without any additional geometric
improvements.
Signalized Intersections
Estimated traffic operations at the intersection of South 19th Avenue and West Koch Street are not
foreseen to change dramatically through the 2026 and 2036 analysis years. As was the case for
existing conditions, the eastbound and westbound approaches are projected to operate at substandard
levels of service during peak periods; however, the intersection as a whole operates at LOS A during
both the AM and PM peak hours even under the estimated 2036 total traffic scenario. Estimated vehicle
queue lengths for the northbound through lanes may potentially block the left turn bay during the
weekday PM peak hour for estimated 2036 total traffic conditions. However, this is dependent on future
traffic volumes, vehicle spacing, signal timing, phase sequencing, and coordination.
Although the intersection of South 19th Avenue and West College Street as a whole is estimated to
operate at LOS D during the weekday PM peak hour for estimated 2036 background and total traffic
conditions, it is marginally over the transition between LOS C and D that occurs at 35 seconds. No
substantial differences are projected over existing conditions for estimated 2026 and 2036 traffic
volumes. Anticipated transportation network changes in the area with increased utilization of West
Garfield Street and potential improvements to West Kagy Boulevard will assist in dispersing traffic
growth the area.
There is the potential that vehicle queues in the southbound through lane could extend to West
Dickerson Street during the PM peak hour; however, as was the case with West Koch Street this is
dependent on future traffic volumes, vehicle spacing, signal timing, phase sequencing, and
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Findings | 6-5
coordination. For the eastbound through movements at the intersection of South 19th Avenue and West
College Street, vehicle queues during the weekday AM and PM peak hours may block access to the left
and right turn bays for estimated 2026 and 2036 traffic volumes. This is also the case for northbound
through/through-right movements during the weekday AM and PM peak hours as well as westbound
through movements during the weekday PM peak hour for those analysis years. None of the estimated
vehicle queues on the eastbound, westbound, or northbound approaches are projected to extend to
upstream intersections.
Secondary Access to South 15th Avenue
As shown in Figure 2-2 on page 2-3, the Gallatin Law and Justice Center campus master plan includes
a secondary access connection to South 15th Avenue at the northeast corner of the site. The proposed
access is to be limited to law enforcement, emergency services, or public works department personnel
and therefore should not have a significant impact to traffic operations on South 15th Avenue.
Multimodal Considerations
Transit Service
As provided in Chapter 3 – Existing Area Conditions, Streamline currently offers two weekday routes
along West College Street within the study area as well as late night service Thursday through
Saturday along South 19th Avenue. Additionally, route stops are currently available on West College
Street near its intersections with South 15th Avenue and South 16th Avenue, providing reasonably
close access to the Gallatin Law and Justice Center campus. Likewise, the late night service along
South 19th Avenue has route stops at West College Street as well as West Koch Street.
Discussions during the master planning process for the Gallatin Law and Justice Center campus have
included the potential for inclusion of a transit route stop within the campus. Although it is feasible to
include a transit stop with the redevelopment of the site, it would most likely increase travel time for the
Streamline routes. Therefore, an evaluation of how many transit riders are currently traveling to and or
from the law and justice center campus as well as an estimation of potential future ridership would be
recommended. Ultimately, coordination would be necessary among Streamline and the City of
Bozeman on routes and route stops if it is desired to include a direct transit service connection as part
of the Gallatin Law and Justice Center campus master plan. Alternatively, space can be preserved
within the site plan for a future transit route stop or transfer site (and designated as such for future
reference) to be constructed at a later date as justified by demand.
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
6-6 | Findings
Pedestrians & Bicyclists
With the planned West College Street reconstruction between South 19th Avenue and South 8th
Avenue, it is anticipated that the missing sidewalks along the north side of West College Street would
be completed. Additionally, bike lanes are expected to be included on both sides of the roadway as was
recently done on the segment of West College Street between South 19th Avenue and
Huffine Lane / West Main Street (US 191).
The redevelopment of the Gallatin Law and Justice Center campus will incorporate sidewalks
throughout the site where appropriate, including a connection south to the Guenther Building property
adjacent to the southwest corner of the site that is the present location of the Gallatin County Attorney’s
offices. The included sidewalks will complete connections to existing sidewalks on West Dickerson
Street as well as South 16th Avenue, providing a continuous link for pedestrians to and from South 19th
Avenue as well as West College Street. It is expected that locations for bicycle parking will be
incorporated with the site as well.
Improvement Needs for Cumulative Conditions
Gallatin Law & Justice Center Campus Transportation Impacts
The addition of traffic from the proposed modifications and potential expansion of the Gallatin Law and
Justice Center campus is estimated to have very minor impacts on traffic operations within the study
area based on the included traffic analyses. No level of service deficiencies are projected with the
Gallatin Law and Justice Center campus traffic that would require specific mitigation measures due to
the development.
Traffic Operations
As was the case for existing conditions, the deficiencies estimated at the signalized intersections within
the study area on the side street approaches to South 19th Avenue may be potentially mitigated with
modifications to the signal coordination plan for the 19th Avenue corridor to reduce delays forecast for
side street approaches. Again, this would require evaluating all of the coordinated signals along the
corridor, which is beyond the scope and intent of this study. In order to maintain efficient traffic
operations on 19th Avenue, signal coordination plans should be re-evaluated every three to five years.
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Findings | 6-7
Where estimated vehicle queues are projected to exceed available storage or could potentially impact
upstream intersections, those locations should be monitored to determine if additional measures need
to be taken to address safety or operational concerns. Mitigation may include providing additional
queue storage for turn bays, modifying signal operations to reduce queues, adding capacity for the
queued movements, or even travel demand management strategies. It is not recommended to take any
action at this time as there a potential changes to the transportation network programmed through the
transportation planning process within Bozeman as well as at the Montana State University campus
that could substantially change traffic patterns in the area of South 19th Avenue as well as West
College Street.
Emergency Signal Consideration for South 19th Avenue & West Dickerson Street
As part of the Gallatin Law and Justice Center campus master planning process, there have been
discussions regarding the need for traffic signal to be installed at the intersection of South 19th Avenue
and West College Street to allow for law enforcement and other emergency services personnel to have
clear access to South 19th Avenue in the event of an emergency. If desired by the City of Bozeman for
emergency access to South 19th Avenue from West Dickerson Street, this would need to be
coordinated with MDT. The justification for a traffic signal under these circumstances is outside of the
normal warrant criteria contained within the Manual on Uniform Traffic Control Devices.
With the current signal timing plan that MDT has instituted on 19th Avenue, vehicle queues during peak
periods do not currently extend from West Koch Street to West Dickerson Street during normal peak
traffic periods nor are they estimated to through the 2026 and 2036 analysis years included as a part of
this study. There is the potential that estimated queues for 2036 traffic conditions during the weekday
PM peak period for the southbound approach at the intersection of South 19th Avenue and West
College Street may extend to West Dickerson Street. However, vehicles should not be stopping in the
middle of intersection as it is a violation of the traffic code. Therefore, the intersection should not be
blocked due to poor traffic operations of upstream signals and/or intersections on South 19th Avenue.
This would negate the need for an emergency signal due to traffic blocking the intersection of South
19th Avenue and West Dickerson Street. Should a crash occur at the intersection, an incident
management plan would be put in-place by the on-scene personnel to control the movement of vehicles
as well as pedestrians and bicyclists as needed.
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
6-8 | Findings
Emergency Signal Consideration for West College Street & South 16th Avenue
With regard to the consideration of an emergency signal at the intersection of West College Street and
South 16th Avenue, current and projected traffic operations do not identify the need for a traffic signal.
Additionally, upstream vehicle queues are not anticipated to extend to the intersection. These items
negate the need for an emergency signal due to traffic blocking the intersection of West College Street
and South 16th Avenue. Therefore, the need for a traffic signal at this intersection to provide
emergency access to West College Street from South 16th Avenue would be left to the determination of
the City of Bozeman. As West College Street is classified as an urban system route, this may need to
be coordinated with MDT.
CHAPTER 7
CONCLUSIONS & RECOMMENDATIONS
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Conclusions & Recommendations | 7-1
Conclusions & Recommendations
Gallatin Law & Justice Center Campus
The estimated 2026 and 2036 total traffic volumes utilized in the analyses for the study area include the
projected traffic from the proposed modifications and potential expansion of the Gallatin Law and
Justice Center campus. No impacts to study area intersections resulting from traffic generated by the
Gallatin Law and Justice Center campus were identified beyond existing and future deficiencies noted
at the intersection of South 19th Avenue and West Koch Street as well as the intersection of South 19th
Avenue and West College Street. Impacts resulting from traffic generated by the proposed
development can be accommodated by the existing and anticipated future transportation systems with
the included study recommendations.
Additional Transportation System Considerations
Intersection Sight Distance Obstructions
Sight distance at the intersection of South 19th Avenue and West Koch Street could be improved
through coordination with the property owners on those corners to prune the existing vegetation to
improve visibility; however, some level of protection is provided by the traffic signal at the intersection of
South 19th Avenue and West Koch Street to reduce the potential for right angle crashes between
vehicles. This intersection has not had a significant history of crashes in the past; therefore, although
improving sight distance through pruning of existing vegetation would be beneficial it is not absolutely
necessary at this time.
At the intersection of South 19th Avenue and West Dickerson Street, relocation or modification of the
existing Security Title Company sign on the southeast corner should be considered to improve sight
distance for drivers. With improved sight distance, drivers should no longer stop within the marked
crosswalk, keeping it unobstructed for non-motorized users. Relocation or modification of the existing
sign will require coordination between the City of Bozeman and the property owner.
Signalized Intersection Traffic Operations
For the deficiencies currently being experienced at the signalized intersections within the study area on
the side street approaches to South 19th Avenue, it may be possible to improve operations with
modifications to the signal coordination plan for the 19th Avenue corridor to reduce delays currently
being experienced for side street approaches. This would require evaluating all of the coordinated
signals along the corridor, which is beyond the scope and intent of this study. If desired, a
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
7-2 | Conclusions & Recommendations
comprehensive optimization plan can be developed for the 19th Avenue corridor that reduces delays to
side street approaches while also optimizing system-wide performance. In lieu of modifying the signal
coordination plan, limited options are available for improving operations for the side street approaches.
Emergency Signal Consideration for South 19th Avenue & West Dickerson Street
As part of the Gallatin Law and Justice Center campus master planning process, there have been
discussions regarding the need for traffic signal to be installed at the intersection of South 19th Avenue
and West College Street to allow for law enforcement and other emergency services personnel to have
clear access to South 19th Avenue in the event of an emergency. If desired by the City of Bozeman for
emergency access to South 19th Avenue from West Dickerson Street, this would need to be
coordinated with MDT. The justification for a traffic signal under these circumstances is outside of the
normal warrant criteria contained within the Manual on Uniform Traffic Control Devices.
Emergency Signal Consideration for West College Street & South 16th Avenue
With regard to the consideration of an emergency signal at the intersection of West College Street and
South 16th Avenue, current and projected traffic operations do not identify the need for a traffic signal.
Therefore, the need for a traffic signal at this intersection to provide emergency access to West College
Street from South 16th Avenue would be left to the determination of the City of Bozeman. As West
College Street is classified as an urban system route, this may need to be coordinated with MDT.
Again, the justification for a traffic signal under these circumstances is outside of the normal warrant
criteria contained within the Manual on Uniform Traffic Control Devices.
West College Street
With the proposed improvements to West College Street between South 19th Avenue and South 8th
Avenue to a minor arterial standard identified as committed major street network (CMSN) project
CMSN-2 in the Greater Bozeman Area Transportation Plan (2007 Update) auxiliary left turn lanes
should be included as right-of-way allows at its intersections with South 15th Avenue and South 16th
Avenue to enable improved through traffic flow on West College Street.
Transit Service
A transit pullout on West College Street near its intersections with South 15th Avenue and South 16th
Avenue should strongly be considered with the reconstruction of West College Street to preserve
mobility of traffic operations, improve the functionality of transit stops for Streamline, and provide for the
safe accessibility to transit for users. Furthermore, the addition of a shelter for transit riders should be
considered as an enhancement at the transit route stop location.
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Conclusions & Recommendations | 7-3
Discussions during the master planning process for the Gallatin Law and Justice Center campus have
included the potential for inclusion of a transit route stop within the campus. Although it is feasible to
include a transit stop with the redevelopment of the site, it would most likely increase travel time for the
Streamline routes. Therefore, an evaluation of how many transit riders are currently traveling to and or
from the law and justice center campus as well as an estimation of potential future ridership would be
recommended. Ultimately, coordination would be necessary among Streamline and the City of
Bozeman on routes and route stops if it is desired to include a direct transit service connection as part
of the Gallatin Law and Justice Center campus master plan. Alternatively, space can be preserved
within the site plan for a future transit route stop or transfer site (and designated as such for future
reference) to be constructed at a later date as justified by demand.
Pedestrian & Bicyclist Connectivity
With the planned West College Street reconstruction between South 19th Avenue and South 8th
Avenue, it is anticipated that the missing sidewalks along the north side of West College Street would
be completed. Additionally, bike lanes are expected to be included on both sides of the roadway as was
recently done on the segment of West College Street between South 19th Avenue and
Huffine Lane / West Main Street (US 191).
The redevelopment of the Gallatin Law and Justice Center campus will incorporate sidewalks
throughout the site where appropriate, including a connection south to the Guenther Building property
adjacent to the southwest corner of the site that is the present location of the Gallatin County Attorney’s
offices. The included sidewalks will complete connections to existing sidewalks on West Dickerson
Street as well as South 16th Avenue, providing a continuous link for pedestrians to and from South 19th
Avenue as well as West College Street. It is expected that locations for bicycle parking will be
incorporated with the site as well.
Traffic Control Guidance
All traffic control improvements should be installed in accordance with Montana Department of
Transportation, City of Bozeman, and the Manual on Uniform Traffic Control Devices standards.
REFERENCES
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
References | R-1
References
1. Bozeman Recreation and Parks Advisory Board. (December 17, 2007). Bozeman Parks, Recreation,
Open Space and Trails (PROST) Plan. Bozeman, MT: City of Bozeman.
2. City of Bozeman. (June 1, 2009). Bozeman Community Plan. Bozeman, MT: Author.
3. City of Bozeman. (May 4, 2015). Unified Development Code. Tallahassee, FL: Municode.
4. City of Bozeman Engineering Division. (August 26, 2013). Design Standards and Specifications
Policy. Bozeman, MT: Author.
5. Institute of Transportation Engineers. (2005). Transportation Impact Analyses for Site Development
– An ITE Proposed Recommended Practice. Washington, DC: Author.
6. Institute of Transportation Engineers. (2012). Trip Generation, 9th Edition. Washington, DC: Author.
7. Institute of Transportation Engineers. (June 2004). Trip Generation Handbook: An ITE
Recommended Practice. Washington, DC: Author.
8. Montana Department of Transportation. (December 13, 2013). 2012 Montana Traffic Data. MDT
Interactive Map Gallery. Retrieved December 15, 2015, from
http://www.arcgis.com/home/webmap/viewer.html?webmap=8a0308abed8846b6b533781e7a96eedd.
9. Robert Peccia & Associates. (July 1993). Bozeman Urban Transportation Plan 1993 Update.
Bozeman, MT: City of Bozeman.
10. Robert Peccia & Associates. (June 2001). Greater Bozeman Area Transportation Plan 2001
Update. Bozeman, MT: City of Bozeman.
11. Robert Peccia & Associates. (2009). Greater Bozeman Area Transportation Plan (2007 Update).
Bozeman, MT: City of Bozeman.
12. Stover, Vergil G. and Frank K. Koepke. (2002). Transportation and Land Development, 2nd Edition.
Washington, DC: Institute of Transportation Engineers.
13. Transportation Research Board. (2010). Highway Capacity Manual 2010. Washington, DC: Author.
14. United States Census Bureau – Population Division. (December 2015). Annual Estimates of the
Resident Population: April 1, 2010 to July 1, 2014. American FactFinder. Retrieved December 15,
2015, from http://factfinder2.census.gov/faces/tableservices/jsf/pages/productview.xhtml?pid=PEP_2013_PEPANNRES.
15. United States Department of Transportation – Federal Highway Administration. (December 2009).
Manual on Uniform Traffic Control Devices for Streets and Highways, 2009 Edition. Washington,
DC: Author.
16. Wikipedia, The Free Encyclopedia. (December 15, 2015). Bozeman, Montana. Wikipedia, The Free
Encyclopedia. Retrieved December 15, 2015, from http://en.wikipedia.org/wiki/Bozeman,_Montana.
17. Wikipedia, The Free Encyclopedia. (December 15, 2015). Gallatin County, Montana.
Wikipedia, The Free Encyclopedia. Retrieved December 15, 2015, from
http://en.wikipedia.org/wiki/Gallatin_County,_Montana.
APPENDIX A
LEVEL OF SERVICE CONCEPTS,
ANALYSIS METHODOLOGIES,
& STANDARDS OF SIGNIFICANCE
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Appendix A: Level of Service Concepts, Analysis Methodologies, & Standards of Significance | A-1
Unsignalized Intersection Level of Service
The HCM2010 analysis method for evaluating unsignalized, minor street top controlled intersections is
based on the average total delay for each impeded movement. As used here, total delay is defined as
the total elapsed time from when a vehicle stops at the end of a queue until the vehicle departs from the
stop line. This time includes the time required for the vehicle to travel from the last-in-queue to the
first-in-queue position. The average total delay for any particular minor movement is a function of the
service rate or capacity of the approach and the degree of saturation. The resulting delay is used to
determine the level of service as shown in Table A-1 below.
Table A-1: Level of Service Criteria for Minor Street Stop-Controlled Intersections
Average Control Delay Level of Service (LOS) Characteristics
≤ 10 seconds LOS A – Little or no delay
10.1 – 15.0 seconds LOS B – Short traffic delay
15.1 – 25.0 seconds LOS C – Average traffic delay
25.1 – 35.0 seconds LOS D – Long traffic delays
35.1 – 50.0 seconds LOS E – Very long traffic delays
> 50.1 seconds LOS F – When the demand exceeds the capacity of the lane, extreme delays will be
encountered and queuing may cause severe congestion to the intersection.
Source: Highway Capacity Manual 2010 (Transportation Research Board, 2010)
Source: Exhibit 17-20. Highway Capacity Manual 2000, Pg. 17-24 (Transportation Research Board, 2000)
Figure A-1: Control Delay and Flow Rate
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
A-2 | Appendix A: Level of Service Concepts, Analysis Methodologies, & Standards of Significance
Signalized Intersection Level of Service
The operational analysis method for evaluation of signalized intersections presented in the HCM2010
defines level of service in terms of delay, or more specifically, control stopped delay per vehicle. Delay
is a measure of driver and/or passenger discomfort, frustration, fuel consumption, and lost travel time.
The level of service criteria for signalized intersections is presented in Table A-2 below.
Table A-2: Level of Service Criteria for Signalized Intersections
Control Stopped
Delay Per Vehicle Level of Service (LOS) Characteristics
≤ 10 seconds LOS A – Operations with very low delay. This occurs when progression is extremely favorable, and
most vehicles do not stop at all. Short cycle lengths may also contribute to low delay.
10.1 – 20.0 seconds LOS B – Operations with generally good progression and/or short cycle lengths. More vehicles stop
than for LOS A, causing higher levels of average delay.
20.1 – 35.0 seconds
LOS C – Operations with higher delays, which may result from fair progression and/or longer cycle
lengths. Individual cycle failures may begin to appear at this level. The number of vehicles stopping is
significant at this level, although many still pass through the intersection without stopping.
35.1 – 55.0 seconds
LOS D – Operations with high delay, resulting from some combination of unfavorable progression,
long cycle lengths, or high volumes. The influence of congestion becomes more noticeable, and
individual cycle failures are noticeable.
55.1 – 80.0 seconds LOS E – Considered being the limit of acceptable delay. Individual cycle failures are frequent
occurrences.
> 80.1 seconds
LOS F – A condition of excessively high delay, considered unacceptable to most drivers. This
condition often occurs when arrival flow rates exceed the capacity of the intersection. Poor progression
and long cycle lengths may also be major contributing causes to such delay.
Source: Highway Capacity Manual 2010 (Transportation Research Board, 2000)
City of Bozeman Standards
The City of Bozeman Unified Development Ordinance (UDO) identifies specific standards for
transportation facilities and access. The standards pertaining to this study are identified in the
paragraphs that follow.
Traffic Progression
Section 38.24.060.B.3 of the UDO conveys specific requirements for the spacing of potential
intersections with traffic signals. This Section states the following:
“Traffic progression will be of paramount importance. Consequently, all potential
intersections with signals will be placed on quarter-mile points unless otherwise
approved by the review authority.”
Traffic Impact Study
Gallatin Law & Justice Center Campus Master Plan
Appendix A: Level of Service Concepts, Analysis Methodologies, & Standards of Significance | A-3
Level of Service Standards
Level of service standards for arterial and collector streets as well as intersections with arterial and
collector streets are stated in Section 38.24.060.B.4 of the UDO. Those standards are as follows:
All arterial and collector streets and intersections with arterial and collector streets shall
operate at a minimum level of service "C" unless specifically exempted by this
subsection. Level of service (LOS) values shall be determined by using the methods
defined by the most recent edition of the Highway Capacity Manual. A development shall
be approved only if the LOS requirements are met in the design year, which shall be a
minimum of 15 years following the development application review or construction of
mitigation measures if mitigation measures are required to maintain LOS. Intersections
shall have a minimum acceptable LOS of "C" for the intersection as a whole.
a. Exception: If an intersection within the area required to be studied by section
38.41.060.A.12 does not meet LOS "C" and the intersection has been fully
constructed to its maximum lane and turning movement capacity, then an
LOS of less than "C" is acceptable.
b. Exception: The review authority may accept an LOS of less than "C" at a
specific intersection if:
(1) A variance to allow a lesser LOS was approved not more than two
years prior to the date an application for development being
reviewed is determined to be adequate for review;
(2) The request was made in writing with the application; and
(3) The circumstances are in the professional judgment of the review
authority substantially the same as when the variance was granted.
APPENDIX B
TRAFFIC COUNT DATA
Page 1/1
Seasonal Factor:
11/30/2015 12/1/2015 12/2/2015 12/3/2015 12/4/2015 12/5/2015 12/6/2015 Weekday Weekend
Hour Monday Tuesday Wednesday Thursday Friday Saturday Sunday Average Average % of
Begin NB NB NB NB NB NB NB NB NB TOTAL Total
0:00 76 69 74 73 73 0.74%
1:00 31 35 51 39 39 0.39%
2:00 21 22 33 25 25 0.25%
3:00 21 25 21 22 22 0.22%
4:00 36 52 36 42 42 0.43%
5:00 87 85 72 81 81 0.82%
6:00 182 162 152 165 165 1.67%
7:00 421 408 396 409 409 4.14%
8:00 550 514 543 536 536 5.42%
9:00 470 478 552 500 500 5.06%
10:00 481 569 525 525 5.31%
11:00 844 648 746 746 7.55%
12:00 759 822 790 790 8.00%
13:00 661 747 704 704 7.12%
14:00 683 663 673 673 6.81%
15:00 777 835 829 814 814 8.24%
16:00 917 928 877 908 908 9.19%
17:00 824 808 800 811 811 8.21%
18:00 574 668 620 621 621 6.28%
19:00 433 443 453 443 443 4.48%
20:00 454 365 400 406 406 4.11%
21:00 253 326 272 283 283 2.86%
22:00 163 155 214 178 178 1.80%
23:00 69 103 87 87 87 0.88%
TOTAL 0 4,466 9,957 9,851 1,930 0 0 9,881 0 9,881 100.00%
0 4,466 9,957 9,851 1,930 0 0 9,881 0 9,881
1.080
TRAFFIC VOLUME COUNT SUMMARY
Roadway:
Count Location:
Road Classification:
Dates Performed:
South 19th Avenue - NB ONLY | Traffic Counter #019965
+/- 120 ft South of West Dickerson Street
12/01/2015 to 12/04/2015
Urban Principal Arterial
0.0%
1.0%
2.0%
3.0%
4.0%
5.0%
6.0%
7.0%
8.0%
9.0%
10.0%
0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:0017:00 18:00 19:00 20:00 21:00 22:00 23:00Percentage of Total Time of Day
Percentage of Daily Traffic Volume Per Hour
N:\2200\040\DESIGN PHASE DOCS\Traffic Data\Traffic Count Data\S-19th-Ave_S_W-Dickerson-St_NB-ONLY_TC-019965_2015-12-01_to_2015-12-04.xlsx
Printed On: 1/14/2016
Page 1/1
Seasonal Factor:
12/1/2015 12/7/2015 12/8/2015 12/9/2015 12/10/2015 12/11/2015 Weekday Weekend
Hour Monday Wednesday Thursday Friday Saturday Sunday Average Average % of
Begin SB SB SB SB SB SB SB SB TOTAL Total
0:00 81 67 74 74 0.64%
1:00 38 44 41 41 0.35%
2:00 32 29 30 30 0.26%
3:00 24 24 24 24 0.21%
4:00 22 24 23 23 0.20%
5:00 83 74 79 79 0.68%
6:00 256 224 240 240 2.07%
7:00 731 745 738 738 6.36%
8:00 809 877 843 843 7.26%
9:00 651 655 653 653 5.63%
10:00 632 718 675 675 5.82%
11:00 735 826 781 781 6.73%
12:00 832 834 799 822 822 7.08%
13:00 850 870 917 879 879 7.57%
14:00 768 822 795 795 6.85%
15:00 832 917 941 897 897 7.73%
16:00 774 836 805 805 6.94%
17:00 845 851 848 848 7.31%
18:00 715 690 703 703 6.06%
19:00 507 503 505 505 4.35%
20:00 405 461 433 433 3.73%
21:00 331 379 355 355 3.06%
22:00 216 228 222 222 1.91%
23:00 139 141 140 140 1.21%
TOTAL 3,282 4,850 11,652 6,022 0 0 11,605 0 11,605 100.00%
3,282 4,850 11,652 6,022 0 0 11,605 0 11,605
1.080
TRAFFIC VOLUME COUNT SUMMARY
Roadway:
Count Location:
Road Classification:
Dates Performed:
South 19th Avenue - SB ONLY | Traffic Counter #019912 (12/01/2015) & #019965 (12/07/2015 to 12/09/2015)
+/- 90 ft North of West Dickerson Street
12/01/2015 & 12/07/2015 to 12/09/2015
Urban Principal Arterial
0.0%
1.0%
2.0%
3.0%
4.0%
5.0%
6.0%
7.0%
8.0%
9.0%
0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:0017:00 18:00 19:00 20:00 21:00 22:00 23:00Percentage of Total Time of Day
Percentage of Daily Traffic Volume Per Hour
N:\2200\040\DESIGN PHASE DOCS\Traffic Data\Traffic Count Data\S-19th-Ave_N_W-Dickerson-St_SB-ONLY_TC-019912+019965_2015-12-01+2015-12-07_to_2015-12-09.xlsx
Printed On: 1/14/2016
Page 1/1
Seasonal Factor:
Hour % of
Begin EB WB EB WB EB WB EB WB EB WB EB WB EB WB EB WB EB WB TOTAL Total
0:00 47 45 48 48 47 46 93 0.82%
1:00 17 33 31 35 24 34 58 0.51%
2:00 16 12 16 22 16 17 33 0.29%
3:00 7 17 15 11 11 14 25 0.22%
4:00 11 27 7 20 9 23 32 0.28%
5:00 28 28 28 37 28 33 61 0.54%
6:00 82 95 70 81 76 88 164 1.45%
7:00 365 228 378 221 372 225 597 5.29%
8:00 442 271 434 336 438 304 742 6.58%
9:00 366 221 393 214 380 218 598 5.30%
10:00 298 267 376 214 337 241 578 5.12%
11:00 404 255 518 325 461 290 751 6.66%
12:00 442 371 432 386 437 379 816 7.23%
13:00 479 344 479 344 823 7.29%
14:00 443 313 443 313 756 6.70%
15:00 513 424 513 424 937 8.31%
16:00 463 525 437 417 450 471 921 8.16%
17:00 525 500 561 467 543 484 1,027 9.10%
18:00 382 320 342 285 362 303 665 5.89%
19:00 274 238 252 266 263 252 515 4.56%
20:00 189 188 241 224 215 206 421 3.73%
21:00 156 139 173 168 164 153 317 2.81%
22:00 115 86 116 109 116 98 214 1.90%
23:00 60 62 86 68 73 65 138 1.22%
TOTAL 2,164 2,058 6,169 4,953 2,746 1,953 0 0 0 0 0 0 0 0 6,257 5,025 0 0 11,282 100.00%
11,282
12/7/2015
0
Average
Weekend
0 0 0 11,282
Weekday
Average
12/12/2015
4,222 11,122 4,699 0
Monday
12/9/2015
Wednesday
12/8/2015
Tuesday
TRAFFIC VOLUME COUNT SUMMARY
Roadway:
Count Location:
Road Classification:
Dates Performed:
Saturday
12/13/2015
Sunday
12/10/2015
Thursday
12/11/2015
Friday
West College Street (Traffic Counter #019970)
+/- 110 ft East of South 16th Avenue
12/07/2015 to 12/09/2015
Urban Minor Arterial
1.080
0.0%
1.0%
2.0%
3.0%
4.0%
5.0%
6.0%
7.0%
8.0%
9.0%
10.0%
0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00Percentage of Total Time of Day
Percentage of Daily Traffic Volume Per Hour
N:\2200\040\DESIGN PHASE DOCS\Traffic Data\Traffic Count Data\W-College-St_E_S-16th-Ave_TC-019970_2015-12-07_to_2015-12-09.xlsx Printed On: 1/14/2016
Page 1/1
Seasonal Factor:
Hour % of
Begin EB WB EB WB EB WB EB WB EB WB EB WB EB WB EB WB EB WB TOTAL Total
0:00 47 45 45 44 46 45 91 0.82%
1:00 16 29 31 32 23 31 54 0.48%
2:00 16 11 14 18 15 15 30 0.27%
3:00 7 17 12 9 10 13 23 0.21%
4:00 12 28 7 18 10 23 33 0.30%
5:00 31 27 31 39 31 33 64 0.57%
6:00 90 94 79 86 85 90 175 1.57%
7:00 367 221 370 210 369 215 584 5.24%
8:00 451 270 450 306 451 288 739 6.63%
9:00 361 206 386 205 373 206 579 5.20%
10:00 289 242 370 202 330 222 552 4.95%
11:00 394 265 493 340 444 302 746 6.69%
12:00 435 379 422 379 428 379 807 7.24%
13:00 460 329 460 329 789 7.08%
14:00 424 310 424 310 734 6.59%
15:00 555 471 491 418 523 444 967 8.68%
16:00 411 522 423 440 417 481 898 8.06%
17:00 509 508 560 488 535 498 1,033 9.27%
18:00 382 322 340 275 361 299 660 5.92%
19:00 268 237 246 265 257 251 508 4.56%
20:00 184 183 246 219 215 201 416 3.73%
21:00 157 141 163 165 160 153 313 2.81%
22:00 113 81 120 110 116 96 212 1.90%
23:00 57 62 89 67 73 64 137 1.23%
TOTAL 2,636 2,525 6,082 4,922 2,709 1,889 0 0 0 0 0 0 0 0 6,156 4,988 0 0 11,144 100.00%
11,144
West College Street (Traffic Counter #019917)
+/- 110 ft West of South 16th Avenue
12/07/2015 to 12/09/2015
Urban Minor Arterial
1.080
12/9/2015
Wednesday
12/8/2015
Tuesday
TRAFFIC VOLUME COUNT SUMMARY
Roadway:
Count Location:
Road Classification:
Dates Performed:
Saturday
12/13/2015
Sunday
12/10/2015
Thursday
12/11/2015
Friday
12/7/2015
0
Average
Weekend
0 0 0 11,144
Weekday
Average
12/12/2015
5,161 11,003 4,598 0
Monday
0.0%
1.0%
2.0%
3.0%
4.0%
5.0%
6.0%
7.0%
8.0%
9.0%
10.0%
0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00Percentage of Total Time of Day
Percentage of Daily Traffic Volume Per Hour
N:\2200\040\DESIGN PHASE DOCS\Traffic Data\Traffic Count Data\W-College-St_W_S-16th-Ave_TC-019970_2015-12-07_to_2015-12-09.xlsx Printed On: 1/14/2016
Page 1/1
Seasonal Factor:
Hour % of
Begin EB WB EB WB EB WB EB WB EB WB EB WB EB WB EB WB EB WB TOTAL Total
0:00 1 6 4 8 8 9 4 7 11 0.53%
1:00 3 0 1 6 5 4 3 3 6 0.29%
2:00 6 4 6 4 6 4 6 4 10 0.48%
3:00 2 9 10 9 2 6 5 8 13 0.63%
4:00 6 2 2 1 2 2 3 2 5 0.24%
5:00 13 3 17 4 9 7 13 5 18 0.87%
6:00 37 12 30 22 25 20 31 18 49 2.36%
7:00 99 25 96 36 89 25 95 29 124 5.98%
8:00 137 45 99 47 101 58 112 50 162 7.81%
9:00 64 64 76 56 107 56 83 59 142 6.85%
10:00 63 69 86 64 75 67 142 6.85%
11:00 78 91 77 97 78 94 172 8.30%
12:00 80 91 112 109 96 100 196 9.45%
13:00 141 84 110 84 126 84 210 10.13%
14:00 95 98 67 85 81 91 172 8.30%
15:00 75 110 72 122 73 116 189 9.12%
16:00 64 86 61 79 64 102 63 89 152 7.33%
17:00 38 66 28 92 38 113 34 91 125 6.03%
18:00 24 25 21 33 26 39 24 32 56 2.70%
19:00 20 19 18 21 14 25 17 22 39 1.88%
20:00 17 17 14 11 20 14 17 14 31 1.50%
21:00 4 9 6 10 6 14 5 11 16 0.77%
22:00 4 10 9 6 8 18 7 11 18 0.87%
23:00 5 2 8 9 8 12 7 8 15 0.72%
TOTAL 0 0 175 233 1,064 975 1,048 1,091 354 191 0 0 0 0 1,058 1,015 0 0 2,073 100.00%
2,073
11/30/2015
0
Average
Weekend
546 0 0 2,073
Weekday
Average
12/5/2015
0 409 2,039 2,140
Monday
12/2/2015
Wednesday
12/1/2015
Tuesday
TRAFFIC VOLUME COUNT SUMMARY
Roadway:
Count Location:
Road Classification:
Dates Performed:
Saturday
12/6/2015
Sunday
12/3/2015
Thursday
12/4/2015
Friday
West Dickerson Street (Traffic Counter #019970)
+/- 90 ft East of South 19th Avenue
12/01/2015 to 12/04/2015
Urban Local Street
1.000
0.0%
2.0%
4.0%
6.0%
8.0%
10.0%
12.0%
0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00Percentage of Total Time of Day
Percentage of Daily Traffic Volume Per Hour
N:\2200\040\DESIGN PHASE DOCS\Traffic Data\Traffic Count Data\W-Dickerson-St_E_S-19th-Ave_TC-019970_2015-12-01_to_2015-12-04.xlsx Printed On: 1/14/2016
Page 1/1
Seasonal Factor:
Hour % of
Begin EB WB EB WB EB WB EB WB EB WB EB WB EB WB EB WB EB WB TOTAL Total
0:00 1 2 4 6 3 4 7 0.74%
1:00 1 1 1 1 1 1 2 0.21%
2:00 1 0 2 3 2 1 3 0.32%
3:00 1 2 2 1 2 1 3 0.32%
4:00 0 0 0 0 0 0 0 0.00%
5:00 1 0 1 1 1 0 1 0.11%
6:00 8 4 5 4 7 4 11 1.17%
7:00 17 22 22 21 20 22 42 4.45%
8:00 26 26 25 34 26 30 56 5.93%
9:00 29 14 21 26 25 20 45 4.77%
10:00 30 35 32 31 31 33 64 6.78%
11:00 36 37 40 32 38 35 73 7.73%
12:00 39 47 37 40 38 44 82 8.69%
13:00 26 41 26 41 67 7.10%
14:00 36 41 34 42 35 42 77 8.16%
15:00 34 63 35 48 34 56 90 9.53%
16:00 43 42 42 58 43 50 93 9.85%
17:00 37 37 45 37 41 37 78 8.26%
18:00 35 15 24 30 30 23 53 5.61%
19:00 14 17 19 16 16 17 33 3.50%
20:00 15 17 11 6 13 12 25 2.65%
21:00 10 11 8 13 9 12 21 2.22%
22:00 6 6 2 3 4 4 8 0.85%
23:00 1 7 2 9 2 8 10 1.06%
TOTAL 230 257 439 494 193 199 0 0 0 0 0 0 0 0 447 497 0 0 944 100.00%
944
12/7/2015
0
Average
Weekend
0 0 0 944
Weekday
Average
12/12/2015
487 933 392 0
Monday
12/9/2015
Wednesday
12/8/2015
Tuesday
TRAFFIC VOLUME COUNT SUMMARY
Roadway:
Count Location:
Road Classification:
Dates Performed:
Saturday
12/13/2015
Sunday
12/10/2015
Thursday
12/11/2015
Friday
West Dickerson Street (Traffic Counter #019950)
+/- 60 ft West of South 19th Avenue
12/07/2015 to 12/09/2015
Urban Local Street
1.000
0.0%
2.0%
4.0%
6.0%
8.0%
10.0%
12.0%
0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00Percentage of Total Time of Day
Percentage of Daily Traffic Volume Per Hour
N:\2200\040\DESIGN PHASE DOCS\Traffic Data\Traffic Count Data\W-Dickerson-St_W_S-19th-Ave_TC-019950_2015-12-07_to_2015-12-09.xlsx Printed On: 1/14/2016
Page 1/1
Seasonal Factor:
Hour % of
Begin EB WB EB WB EB WB EB WB EB WB EB WB EB WB EB WB EB WB TOTAL Total
0:00 6 8 6 10 1 6 5 7 4 7 3 6 6 9 24 1.17%
1:00 3 8 6 6 4 7 3 4 1 7 2 6 4 7 19 0.92%
2:00 4 9 11 7 6 3 3 2 0 3 3 3 7 8 21 1.01%
3:00 6 7 2 4 2 3 3 4 5 9 3 6 4 6 18 0.88%
4:00 6 6 4 8 3 8 4 8 5 10 4 8 5 7 23 1.13%
5:00 4 8 2 1 3 3 5 2 4 3 3 4 14 0.66%
6:00 7 3 7 4 9 6 10 2 10 4 7 4 25 1.20%
7:00 9 10 8 13 33 15 38 13 35 14 9 12 70 3.39%
8:00 8 18 8 8 90 29 80 32 85 30 8 13 136 6.60%
9:00 13 15 6 11 73 45 66 56 69 51 9 13 142 6.90%
10:00 7 8 9 13 54 84 52 46 53 65 8 10 137 6.64%
11:00 16 26 12 11 48 57 62 55 55 56 14 19 143 6.94%
12:00 13 14 10 6 55 68 45 74 50 71 11 10 142 6.90%
13:00 14 18 9 14 63 63 65 48 64 56 11 16 147 7.14%
14:00 13 17 7 11 90 66 62 66 76 66 10 14 166 8.05%
15:00 17 19 13 11 50 70 50 63 50 67 15 15 147 7.13%
16:00 18 14 7 7 65 59 50 70 57 65 13 10 146 7.06%
17:00 53 67 17 22 16 11 42 70 55 63 50 67 16 17 149 7.25%
18:00 41 63 21 28 17 17 36 66 30 64 36 64 19 22 141 6.83%
19:00 14 20 5 21 14 11 18 25 19 33 17 26 9 16 68 3.31%
20:00 18 20 19 25 19 18 14 19 17 20 16 19 19 21 76 3.70%
21:00 14 9 16 9 13 9 10 18 12 12 12 13 14 9 48 2.32%
22:00 14 9 10 8 6 9 8 9 8 4 10 7 8 8 33 1.62%
23:00 7 8 3 9 2 6 2 10 13 10 7 9 2 7 26 1.26%
TOTAL 162 195 254 327 212 223 778 809 756 759 14 35 0 0 773 781 233 275 2,062 100.00%
2,062
11/6/2015
508
Average
Weekend
1,515 49 0 1,554
Weekday
Average
11/11/2015
356 581 435 1,587
Friday
11/8/2015
Sunday
11/7/2015
Saturday
TRAFFIC VOLUME COUNT SUMMARY
Roadway:
Count Location:
Road Classification:
Dates Performed:
Wednesday
11/12/2015
Thursday
11/9/2015
Monday
11/10/2015
Tuesday
West Dickerson Street (Traffic Counter #019970)
+/- 385 ft East of South 19th Avenue
11/06/2015 to 11/11/2015
Urban Local Street
1.000
0.0%
1.0%
2.0%
3.0%
4.0%
5.0%
6.0%
7.0%
8.0%
9.0%
0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00Percentage of Total Time of Day
Percentage of Daily Traffic Volume Per Hour
N:\2200\040\DESIGN PHASE DOCS\Traffic Data\Traffic Count Data\W-Dickerson-St_at_L+J-Center_TC-019970_2015-11-06_to_2015-11-11.xlsx Printed On: 1/18/2016
Page 1/1
Seasonal Factor:
Hour % of
Begin EB WB EB WB EB WB EB WB EB WB EB WB EB WB EB WB EB WB TOTAL Total
0:00 1 6 4 8 8 8 4 7 11 0.70%
1:00 4 0 1 7 4 7 3 4 7 0.45%
2:00 5 4 5 8 6 3 5 5 10 0.64%
3:00 1 11 10 12 2 4 4 9 13 0.83%
4:00 5 2 2 1 2 3 3 2 5 0.32%
5:00 12 4 17 3 10 6 13 4 17 1.09%
6:00 35 15 33 17 23 21 30 18 48 3.07%
7:00 76 28 69 28 60 20 68 25 93 5.95%
8:00 81 57 55 35 61 45 65 46 111 7.10%
9:00 30 64 47 46 46 40 41 50 91 5.82%
10:00 38 47 48 65 43 56 99 6.33%
11:00 50 79 55 76 53 78 131 8.38%
12:00 67 56 87 101 77 79 156 9.98%
13:00 82 58 67 55 74 57 131 8.38%
14:00 46 53 63 86 43 65 51 68 119 7.61%
15:00 51 76 43 58 48 85 47 73 120 7.68%
16:00 48 65 47 81 44 66 46 71 117 7.49%
17:00 28 65 39 99 34 89 33 84 117 7.49%
18:00 20 19 26 42 25 33 24 31 55 3.52%
19:00 15 17 17 21 14 28 15 22 37 2.37%
20:00 16 17 12 12 19 11 16 13 29 1.86%
21:00 4 6 6 8 4 13 4 9 13 0.83%
22:00 6 11 7 9 7 18 7 12 19 1.22%
23:00 4 2 7 10 6 12 6 8 14 0.90%
TOTAL 0 0 236 329 753 858 743 880 221 156 0 0 0 0 732 831 0 0 1,563 100.00%
1,563
West Dickerson Street (Traffic Counter #019950)
+/- 385 ft East of South 19th Avenue
12/01/2015 to 12/04/2015
Urban Local Street
1.000
12/2/2015
Wednesday
12/1/2015
Tuesday
TRAFFIC VOLUME COUNT SUMMARY
Roadway:
Count Location:
Road Classification:
Dates Performed:
Saturday
12/6/2015
Sunday
12/3/2015
Thursday
12/4/2015
Friday
11/30/2015
0
Average
Weekend
377 0 0 1,563
Weekday
Average
12/5/2015
0 565 1,611 1,623
Monday
0.0%
2.0%
4.0%
6.0%
8.0%
10.0%
12.0%
0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00Percentage of Total Time of Day
Percentage of Daily Traffic Volume Per Hour
N:\2200\040\DESIGN PHASE DOCS\Traffic Data\Traffic Count Data\W-Dickerson-St_at_L+J-Center_TC-019950_2015-12-01_to_2015-12-04.xlsx Printed On: 1/15/2016
Page 1/1
Seasonal Factor:
Hour % of
Begin NB SB NB SB NB SB NB SB NB SB NB SB NB SB NB SB NB SB TOTAL Total
0:00 3 5 1 6 2 1 3 2 3 1 2 5 11 1.04%
1:00 4 7 7 4 4 1 3 2 4 1 6 6 16 1.51%
2:00 4 1 4 2 1 1 5 4 3 2 4 1 11 1.01%
3:00 3 1 1 3 2 1 1 2 2 1 2 2 7 0.64%
4:00 0 0 3 1 2 2 3 1 3 1 2 0 6 0.55%
5:00 7 2 4 0 4 3 2 1 3 2 6 1 11 1.07%
6:00 6 6 4 4 16 8 12 10 14 9 5 5 33 3.15%
7:00 5 4 2 5 26 13 26 9 26 11 4 4 45 4.23%
8:00 13 7 7 6 32 14 37 21 35 18 10 7 69 6.52%
9:00 6 2 7 7 11 26 15 33 13 30 7 5 54 5.08%
10:00 11 6 5 2 10 24 18 26 14 25 8 4 51 4.79%
11:00 17 10 6 6 13 38 25 34 19 36 12 8 75 7.08%
12:00 14 9 7 5 15 58 18 43 17 51 11 7 85 8.02%
13:00 9 6 6 5 22 32 22 32 8 6 67 6.37%
14:00 10 6 10 8 12 36 12 36 10 7 65 6.14%
15:00 10 16 5 8 13 39 13 39 8 12 71 6.75%
16:00 6 7 10 8 21 53 21 53 8 8 90 8.47%
17:00 26 56 21 18 8 8 18 48 22 52 15 13 102 9.61%
18:00 9 15 9 6 11 22 17 19 13 17 10 14 54 5.15%
19:00 9 15 10 7 10 15 11 13 10 14 10 11 45 4.25%
20:00 7 8 12 6 4 5 14 8 11 8 8 6 32 3.06%
21:00 6 14 1 2 3 5 4 4 5 9 2 3 19 1.80%
22:00 1 8 5 6 3 5 3 10 2 9 4 5 20 1.92%
23:00 8 5 4 9 1 6 1 5 5 5 3 7 19 1.80%
TOTAL 66 121 190 150 129 144 274 456 168 188 0 0 0 0 288 463 160 147 1,057 100.00%
1,057
South 16th Avenue (Traffic Counter #019950)
+/- 370 ft North of West College Street
11/06/2015 to 11/11/2015
Urban Local Street
1.000
11/8/2015
Sunday
11/7/2015
Saturday
TRAFFIC VOLUME COUNT SUMMARY
Roadway:
Count Location:
Road Classification:
Dates Performed:
Wednesday
11/12/2015
Thursday
11/9/2015
Monday
11/10/2015
Tuesday
11/6/2015
306
Average
Weekend
356 0 0 751
Weekday
Average
11/11/2015
187 340 273 730
Friday
0.0%
2.0%
4.0%
6.0%
8.0%
10.0%
12.0%
0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00Percentage of Total Time of Day
Percentage of Daily Traffic Volume Per Hour
N:\2200\040\DESIGN PHASE DOCS\Traffic Data\Traffic Count Data\S-16th-Ave_at_L+J-Center_TC-019950_2015-11-06_to_2015-11-11.xlsx Printed On: 1/18/2016
Page 1/1
Seasonal Factor:
Hour % of
Begin NB SB NB SB NB SB NB SB NB SB NB SB NB SB NB SB NB SB TOTAL Total
0:00 7 1 4 5 1 3 4 3 7 0.89%
1:00 1 2 2 1 4 3 2 2 4 0.51%
2:00 2 1 3 0 1 4 2 2 4 0.51%
3:00 1 0 2 3 1 1 1 1 2 0.25%
4:00 1 1 0 4 0 0 0 2 2 0.25%
5:00 4 1 4 1 4 0 4 1 5 0.64%
6:00 9 11 7 12 10 7 9 10 19 2.42%
7:00 19 13 25 13 24 9 22 12 34 4.33%
8:00 40 26 37 23 34 20 37 23 60 7.63%
9:00 25 25 31 18 28 22 50 6.36%
10:00 20 15 22 18 21 16 37 4.71%
11:00 30 41 30 33 30 37 67 8.52%
12:00 27 35 35 62 31 49 80 10.18%
13:00 31 30 40 26 36 28 64 8.14%
14:00 27 39 28 37 27 38 65 8.27%
15:00 19 23 20 35 19 29 48 6.11%
16:00 21 46 22 47 21 47 68 8.65%
17:00 27 50 25 60 18 46 23 52 75 9.54%
18:00 10 18 12 18 14 14 12 17 29 3.69%
19:00 9 14 3 14 6 12 6 13 19 2.42%
20:00 4 12 3 6 7 9 5 9 14 1.78%
21:00 6 7 6 8 6 7 6 8 14 1.78%
22:00 4 7 2 2 1 4 2 5 7 0.89%
23:00 2 6 5 8 7 5 5 7 12 1.53%
TOTAL 0 0 63 114 339 427 371 437 79 49 0 0 0 0 353 433 0 0 786 100.00%
786
South 16th Avenue (Traffic Counter #019919)
+/- 370 ft North of West College Street
12/01/2015 to 12/04/2015
Urban Local Street
1.000
12/2/2015
Wednesday
12/1/2015
Tuesday
TRAFFIC VOLUME COUNT SUMMARY
Roadway:
Count Location:
Road Classification:
Dates Performed:
Saturday
12/6/2015
Sunday
12/3/2015
Thursday
12/4/2015
Friday
11/30/2015
0
Average
Weekend
128 0 0 786
Weekday
Average
12/5/2015
0 177 766 808
Monday
0.0%
2.0%
4.0%
6.0%
8.0%
10.0%
12.0%
0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00Percentage of Total Time of Day
Percentage of Daily Traffic Volume Per Hour
N:\2200\040\DESIGN PHASE DOCS\Traffic Data\Traffic Count Data\S-16th-Ave_at_L+J-Center_TC-019919_2015-12-01_to_2015-12-04.xlsx Printed On: 1/15/2016
Page 1/1
Intersection:
Location:
Date Count Performed:
Count Time Period:
Seasonal Adjustment Factor:
Street/Approach Total Peak Hour %% Buses % Heavy
Road Movement 7:00 7:15 7:30 7:45 8:00 8:15 8:30 8:45 Total %%Volume PHF Trucks & RV's Vehicles
L 4 4 12 20 2 17 8 9 77 4.81%2.66%51 0.64 0.00%0.00%0.00%
T 85 144 235 272 185 182 175 201 1479 92.40%51.02%875 0.80 1.01%2.10%3.11%
R 0 5 6 2 4 8 3 6 35 2.21%1.22%21 0.63 2.83%2.83%5.66%
Bike/Ped 2 1 0 1 0 1 0 4 9 0.58%0.32%2 0.50
L 1 1 3 9 6 5 5 4 35 3.84%1.22%24 0.64 0.00%0.00%0.00%
T 64 79 84 136 136 134 104 96 834 90.62%28.78%491 0.90 0.84%2.88%3.72%
R 0 2 6 9 4 5 11 6 45 4.86%1.54%25 0.67 0.00%0.00%0.00%
Bike/Ped 1 0 1 2 1 0 1 0 6 0.68%0.22%4 0.50
L 0 4 7 11 9 9 4 12 58 33.53%2.01%37 0.82 0.00%1.72%1.72%
T 4 2 7 15 7 12 11 12 72 41.32%2.48%42 0.71 0.00%1.39%1.39%
R 1 3 4 10 4 7 3 3 36 20.96%1.26%26 0.63 0.00%2.75%2.75%
Bike/Ped 2 1 2 0 1 1 0 0 7 4.19%0.25%4 0.50
L 1 4 6 9 6 4 1 3 35 17.35%1.22%26 0.69 2.83%0.00%2.83%
T 0 1 12 23 9 15 9 8 78 38.27%2.69%59 0.65 0.00%1.28%1.28%
R 4 5 16 23 7 15 9 10 89 43.88%3.09%60 0.66 0.00%0.00%0.00%
Bike/Ped 0 0 0 0 0 0 0 1 1 0.51%0.04%0 0.00
171 257 404 544 384 416 346 378 2898 100.00%1747 0.80 0.83%2.07%2.90%
1375 1588 1747 1690 1524
Intersection Turning Movement Count Summary
Hourly VolumeWest Koch StreetFrom the EastWest Koch StreetFrom the WestStart Time
South 19th AvenueFrom the NorthSouth 19th AvenueFrom the SouthIntersection Totals
Weekday, AM Peak Period
1.04
South 19th Avenue & West Koch Street
Bozeman, Montana
Thursday, November 12, 2015
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Page 1/1
Intersection:
Location:
Date Count Performed:
Count Time Period:
Seasonal Adjustment Factor:
Street/Approach Total Peak Hour %% Buses % Heavy
Road Movement 4:00 4:15 4:30 4:45 5:00 5:15 5:30 5:45 Total %%Volume PHF Trucks & RV's Vehicles
L 7 9 10 16 14 20 7 10 94 5.78%2.28%59 0.75 0.00%0.00%0.00%
T 192 170 152 170 206 205 197 186 1477 91.14%36.02%732 0.89 0.14%1.76%1.90%
R 5 7 4 9 4 7 2 4 44 2.70%1.07%25 0.67 0.00%2.29%2.29%
Bike/Ped 1 1 2 0 0 0 2 0 6 0.39%0.15%2 0.25
L 14 17 20 11 16 16 18 6 116 6.14%2.84%62 0.79 0.00%0.86%0.86%
T 192 215 237 207 253 198 189 192 1684 88.81%41.07%894 0.88 0.12%1.54%1.66%
R 9 9 4 12 16 16 9 10 86 4.55%2.11%48 0.77 0.00%0.00%0.00%
Bike/Ped 1 1 1 1 0 4 0 1 9 0.49%0.23%6 0.38
L 11 6 11 9 7 1 4 8 59 19.59%1.45%29 0.64 1.69%0.00%1.69%
T 12 19 6 19 26 32 18 10 142 47.08%3.48%83 0.65 0.00%0.00%0.00%
R 9 11 7 8 23 10 7 15 92 30.24%2.23%49 0.53 1.09%0.00%1.09%
Bike/Ped 2 2 2 0 0 0 2 1 9 3.09%0.23%2 0.25
L 3 3 6 16 11 9 1 9 59 21.11%1.45%43 0.68 0.00%0.00%0.00%
T 14 12 7 8 18 26 15 10 110 39.26%2.69%59 0.57 0.00%0.91%0.91%
R 19 16 11 17 10 12 12 10 108 38.52%2.64%51 0.77 0.00%0.92%0.92%
Bike/Ped 1 1 1 0 0 0 0 0 3 1.11%0.08%1 0.25
494 500 484 503 603 556 484 475 4100 100.00%2147 0.89 0.15%1.37%1.51%
1981 2090 2147 2147 2118
Intersection Turning Movement Count Summary
Hourly VolumeWest Koch StreetFrom the EastWest Koch StreetFrom the WestStart Time
South 19th AvenueFrom the NorthSouth 19th AvenueFrom the SouthIntersection Totals
Weekday, PM Peak Period
1.04
South 19th Avenue & West Koch Street
Bozeman, Montana
Thursday, November 12, 2015
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Page 1/1
Intersection:
Location:
Date Count Performed:
Count Time Period:
Seasonal Adjustment Factor:
Street/Approach Total Peak Hour %% Buses % Heavy
Road Movement 7:00 7:15 7:30 7:45 8:00 8:15 8:30 8:45 Total %%Volume PHF Trucks & RV's Vehicles
L 6 14 22 52 32 20 16 11 173 10.60%6.37%126 0.61 1.16%0.00%1.16%
T 80 133 223 265 162 177 159 218 1418 87.04%52.28%827 0.78 0.63%2.33%2.96%
R 2 4 2 2 7 3 2 1 24 1.47%0.88%15 0.50 0.00%0.00%0.00%
Bike/Ped 1 0 3 7 1 1 0 1 15 0.89%0.54%12 0.43
L 0 1 4 3 4 2 3 5 23 2.45%0.84%14 0.81 0.00%0.00%0.00%
T 60 73 85 152 137 131 102 98 838 89.76%30.92%505 0.83 0.60%2.62%3.22%
R 4 5 10 19 12 3 9 7 71 7.57%2.61%45 0.60 0.00%0.00%0.00%
Bike/Ped 0 0 0 0 0 1 0 1 2 0.22%0.08%1 0.25
L 1 0 0 0 1 3 1 3 9 10.00%0.35%4 0.33 0.00%0.00%0.00%
T 0 0 0 1 0 0 1 0 2 2.22%0.08%1 0.25 0.00%0.00%0.00%
R 7 4 11 5 10 17 10 17 82 87.78%3.03%44 0.66 2.43%0.00%2.43%
Bike/Ped 0 0 0 0 0 0 0 0 0 0.00%0.00%0 0.00
L 0 0 2 1 0 2 1 2 8 15.09%0.31%5 0.63 0.00%0.00%0.00%
T 0 0 0 0 0 0 0 0 0 0.00%0.00%0 0.00 0.00%0.00%0.00%
R 2 9 11 6 5 4 3 3 45 81.13%1.65%27 0.59 2.24%0.00%2.24%
Bike/Ped 0 0 1 0 0 1 0 0 2 3.77%0.08%2 0.50
164 243 375 514 373 365 308 368 2711 100.00%1628 0.79 0.70%2.03%2.73%
1297 1506 1628 1560 1414
Intersection Turning Movement Count Summary
Hourly VolumeWest Dickerson StreetFrom the EastWest Dickerson StreetFrom the WestStart Time
South 19th AvenueFrom the NorthSouth 19th AvenueFrom the SouthIntersection Totals
Weekday, AM Peak Period
1.04
South 19th Avenue & West Dickerson Street
Bozeman, Montana
Thursday, November 12, 2015
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Page 1/1
Intersection:
Location:
Date Count Performed:
Count Time Period:
Seasonal Adjustment Factor:
Street/Approach Total Peak Hour %% Buses % Heavy
Road Movement 4:00 4:15 4:30 4:45 5:00 5:15 5:30 5:45 Total %%Volume PHF Trucks & RV's Vehicles
L 9 6 6 9 4 11 7 5 59 3.64%1.62%31 0.68 0.00%0.00%0.00%
T 205 177 159 178 207 205 203 193 1527 93.80%41.66%749 0.90 0.33%1.90%2.23%
R 5 5 7 3 2 5 4 3 35 2.17%0.96%18 0.61 0.00%0.00%0.00%
Bike/Ped 1 0 2 1 0 1 0 1 6 0.38%0.17%4 0.50
L 6 10 9 6 7 8 4 5 57 3.28%1.56%31 0.83 0.00%0.00%0.00%
T 208 203 235 196 220 204 198 197 1660 95.06%45.29%855 0.91 0.12%1.57%1.69%
R 1 4 2 0 0 3 1 2 14 0.77%0.37%5 0.42 0.00%0.00%0.00%
Bike/Ped 3 5 1 1 1 3 1 0 16 0.89%0.43%6 0.50
L 4 5 2 5 5 4 2 3 31 15.15%0.85%17 0.80 0.00%0.00%0.00%
T 0 0 0 1 1 0 1 0 3 1.52%0.09%2 0.50 0.00%0.00%0.00%
R 22 14 28 33 38 17 10 8 171 82.83%4.65%116 0.76 0.59%0.00%0.59%
Bike/Ped 0 0 0 0 0 0 1 0 1 0.51%0.03%0 0.00
L 3 1 1 0 7 3 1 5 22 25.61%0.60%11 0.39 0.00%0.00%0.00%
T 0 0 0 0 0 0 0 0 0 0.00%0.00%0 0.00 0.00%0.00%0.00%
R 5 5 3 9 6 11 12 8 61 71.95%1.67%30 0.66 0.00%0.00%0.00%
Bike/Ped 0 2 0 0 0 0 0 0 2 2.44%0.06%0 0.00
473 438 457 443 500 476 446 432 3665 100.00%1876 0.94 0.22%1.50%1.72%
1811 1838 1876 1866 1854
Intersection Turning Movement Count Summary
Hourly VolumeWest Dickerson StreetFrom the EastWest Dickerson StreetFrom the WestStart Time
South 19th AvenueFrom the NorthSouth 19th AvenueFrom the SouthIntersection Totals
Weekday, PM Peak Period
1.04
South 19th Avenue & West Dickerson Street
Bozeman, Montana
Thursday, November 12, 2015
N:\2200\040\DESIGN PHASE DOCS\Traffic Data\Traffic Count Data\S-19th-Ave_W-Dickerson-St_Weekday-PM_2015-11-12.xlsx Printed On: 1/15/2016
Page 1/1
Intersection:
Location:
Date Count Performed:
Count Time Period:
Seasonal Adjustment Factor:
Street/Approach Total Peak Hour %% Buses % Heavy
Road Movement 7:00 7:15 7:30 7:45 8:00 8:15 8:30 8:45 Total %%Volume PHF Trucks & RV's Vehicles
L 23 43 64 66 29 31 45 45 345 24.56%8.92%190 0.73 0.87%0.29%1.16%
T 63 93 171 135 140 116 116 162 997 70.93%25.76%563 0.82 2.61%0.70%3.31%
R 4 6 6 10 10 17 2 7 63 4.51%1.64%44 0.66 1.58%0.00%1.58%
Bike/Ped 0 0 0 0 0 0 0 0 0 0.00%0.00%0 0.00
L 6 6 14 16 25 20 10 20 116 10.83%3.01%74 0.74 0.86%0.00%0.86%
T 74 54 99 110 147 102 86 81 753 70.02%19.45%458 0.78 1.46%1.73%3.19%
R 9 15 30 41 31 26 22 32 206 19.15%5.32%128 0.79 1.46%0.49%1.94%
Bike/Ped 0 0 0 0 0 0 0 0 0 0.00%0.00%0 0.00
L 7 7 17 16 20 29 18 26 139 28.57%3.60%81 0.70 0.72%0.00%0.72%
T 24 22 31 38 54 37 33 29 269 55.22%6.96%161 0.75 0.00%1.49%1.49%
R 6 6 9 12 11 10 8 11 76 15.57%1.96%44 0.88 1.32%1.32%2.63%
Bike/Ped 0 0 0 1 0 0 2 0 3 0.64%0.08%1 0.25
L 7 5 21 24 7 16 14 10 104 11.52%2.69%68 0.71 0.00%0.00%0.00%
T 26 46 86 113 67 52 59 82 531 58.87%13.73%318 0.70 0.56%0.94%1.51%
R 11 25 62 38 45 31 22 32 267 29.61%6.90%177 0.71 0.00%0.37%0.37%
Bike/Ped 0 0 0 0 0 0 0 0 0 0.00%0.00%0 0.00
262 328 610 621 587 488 438 539 3872 100.00%2306 0.93 1.29%0.85%2.14%
1821 2146 2306 2133 2051
Intersection Turning Movement Count Summary
Hourly VolumeWest College StreetFrom the EastWest College StreetFrom the WestStart Time
South 19th AvenueFrom the NorthSouth 19th AvenueFrom the SouthIntersection Totals
Weekday, AM Peak Period
1.04
South 19th Avenue & West College Street
Bozeman, Montana
Thursday, November 19, 2015
N:\2200\040\DESIGN PHASE DOCS\Traffic Data\Traffic Count Data\S-19th-Ave_W-College-St_Weekday-AM_2015-11-19.xlsx Printed On: 1/15/2016
Page 1/1
Intersection:
Location:
Date Count Performed:
Count Time Period:
Seasonal Adjustment Factor:
Street/Approach Total Peak Hour %% Buses % Heavy
Road Movement 4:00 4:15 4:30 4:45 5:00 5:15 5:30 5:45 Total %%Volume PHF Trucks & RV's Vehicles
L 32 32 21 29 37 30 45 42 268 16.96%5.00%118 0.78 0.37%0.00%0.37%
T 178 133 152 124 160 156 165 170 1238 78.24%23.05%592 0.92 0.97%0.16%1.13%
R 6 14 11 9 8 1 14 5 69 4.34%1.28%30 0.66 0.00%0.00%0.00%
Bike/Ped 0 6 1 0 0 0 0 0 7 0.46%0.14%1 0.25
L 46 58 61 53 59 52 51 41 421 22.73%7.85%226 0.92 0.24%0.24%0.47%
T 163 166 172 164 180 147 138 145 1275 68.80%23.75%662 0.92 1.18%0.16%1.33%
R 18 14 17 14 28 18 17 24 148 7.97%2.75%76 0.68 0.00%0.00%0.00%
Bike/Ped 1 1 4 0 0 2 0 1 9 0.51%0.17%6 0.38
L 27 22 32 29 52 38 23 38 262 23.75%4.88%152 0.73 0.00%0.00%0.00%
T 52 64 82 67 94 72 55 47 532 48.26%9.92%314 0.84 0.19%0.94%1.13%
R 34 46 58 28 36 30 35 35 304 27.52%5.66%153 0.66 0.33%0.00%0.33%
Bike/Ped 1 0 2 1 1 0 0 0 5 0.47%0.10%4 0.50
L 7 26 18 19 14 10 15 15 123 14.79%2.29%60 0.81 0.00%0.00%0.00%
T 46 45 54 47 73 63 66 70 463 55.76%8.62%237 0.81 0.00%0.86%0.86%
R 24 27 30 28 41 35 34 23 242 29.20%4.51%134 0.83 0.83%0.41%1.24%
Bike/Ped 1 0 0 1 0 0 0 0 2 0.25%0.04%1 0.25
636 654 716 613 783 655 657 654 5368 100.00%2766 0.88 0.61%0.28%0.89%
2619 2765 2766 2708 2750
Intersection Turning Movement Count Summary
Hourly VolumeWest College StreetFrom the EastWest College StreetFrom the WestStart Time
South 19th AvenueFrom the NorthSouth 19th AvenueFrom the SouthIntersection Totals
Weekday, PM Peak Period
1.04
South 19th Avenue & West College Street
Bozeman, Montana
Thursday, November 19, 2015
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Page 1/1
Intersection:
Location:
Date Count Performed:
Count Time Period:
Seasonal Adjustment Factor:
Street/Approach Total Peak Hour %% Buses % Heavy
Road Movement 7:00 7:15 7:30 7:45 8:00 8:15 8:30 8:45 Total %%Volume PHF Trucks & RV's Vehicles
L 0 4 1 0 3 5 3 4 21 33.90%1.33%11 0.55 0.00%0.00%0.00%
R 1 2 2 3 3 3 3 0 18 28.81%1.13%12 1.00 0.00%0.00%0.00%
Bike/Ped 0 0 1 5 0 5 6 5 23 37.29%1.46%16 0.67
T 22 38 47 56 76 78 75 69 461 91.06%29.77%285 0.91 0.22%1.52%1.73%
R 4 2 3 7 5 7 11 3 43 8.54%2.79%31 0.68 4.62%0.00%4.62%
Bike/Ped 1 0 0 1 0 0 0 0 2 0.41%0.13%1 0.25
L 3 2 4 2 0 3 3 1 19 1.89%1.20%8 0.67 0.00%0.00%0.00%
T 54 96 149 177 129 105 116 135 961 97.80%61.99%527 0.74 0.31%0.83%1.14%
Bike/Ped 0 0 2 0 1 0 0 0 3 0.31%0.20%1 0.25
84 144 210 251 217 207 218 217 1550 100.00%894 0.89 0.39%0.97%1.35%
690 823 886 894 860
Intersection Turning Movement Count Summary
Hourly VolumeWest College StreetFrom the EastWest College StreetFrom the WestStart Time
South 16th AvenueFrom the NorthIntersection Totals
Weekday, AM Peak Period
1.03
West College Street & South 16th Avenue
Bozeman, Montana
Tuesday, November 10, 2015
N:\2200\040\DESIGN PHASE DOCS\Traffic Data\Traffic Count Data\W-College-St_S-16th-Ave_Weekday-AM_2015-11-10.xlsx Printed On: 1/15/2016
Page 1/1
Intersection:
Location:
Date Count Performed:
Count Time Period:
Seasonal Adjustment Factor:
Street/Approach Total Peak Hour %% Buses % Heavy
Road Movement 4:00 4:15 4:30 4:45 5:00 5:15 5:30 5:45 Total %%Volume PHF Trucks & RV's Vehicles
L 5 6 5 9 9 5 6 4 50 50.00%2.69%30 0.81 0.00%0.00%0.00%
R 6 4 4 5 15 10 3 1 49 48.98%2.63%34 0.55 0.00%0.00%0.00%
Bike/Ped 0 0 0 0 0 0 1 0 1 1.02%0.05%1 0.25
T 110 140 132 106 137 130 102 98 955 97.17%50.85%475 0.87 0.21%0.63%0.84%
R 3 3 2 7 3 2 3 2 26 2.62%1.37%15 0.54 0.00%0.00%0.00%
Bike/Ped 0 0 1 1 0 0 0 0 2 0.21%0.11%1 0.25
L 2 2 3 2 3 1 2 4 20 2.46%1.04%8 0.67 0.00%0.00%0.00%
T 95 96 76 96 93 104 118 96 774 97.41%41.20%411 0.87 0.52%0.52%1.03%
Bike/Ped 1 0 0 0 0 0 0 0 1 0.13%0.05%0 0.00
222 251 224 227 261 252 236 205 1878 100.00%975 0.94 0.32%0.53%0.85%
924 962 963 975 954
Intersection Turning Movement Count Summary
Hourly VolumeWest College StreetFrom the EastWest College StreetFrom the WestStart Time
South 16th AvenueFrom the NorthIntersection Totals
Weekday, PM Peak Period
1.03
West College Street & South 16th Avenue
Bozeman, Montana
Tuesday, November 10, 2015
N:\2200\040\DESIGN PHASE DOCS\Traffic Data\Traffic Count Data\W-College-St_S-16th-Ave_Weekday-PM_2015-11-10.xlsx Printed On: 1/15/2016
Page 1/1
Intersection:
Location:
Date Count Performed:
Count Time Period:
Seasonal Adjustment Factor:
Street/Approach Total Peak Hour %% Buses % Heavy
Road Movement 7:00 7:15 7:30 7:45 8:00 8:15 8:30 8:45 Total %%Volume PHF Trucks & RV's Vehicles
L 1 2 3 4 0 1 1 5 18 17.35%1.05%6 0.38 0.00%0.00%0.00%
T 0 0 1 0 1 0 0 0 2 2.04%0.12%1 0.25 0.00%0.00%0.00%
R 1 4 5 5 5 4 5 3 33 32.65%1.97%20 0.95 0.00%3.03%3.03%
Bike/Ped 2 1 7 15 9 2 4 7 48 47.96%2.89%31 0.50
L 0 1 0 2 1 0 1 0 5 15.63%0.31%4 0.50 0.00%0.00%0.00%
T 0 0 0 0 2 2 0 0 4 12.50%0.25%4 0.50 0.00%0.00%0.00%
R 0 2 0 3 3 5 4 1 19 56.25%1.11%15 0.75 0.00%5.39%5.39%
Bike/Ped 1 1 0 0 2 0 0 1 5 15.63%0.31%2 0.25
L 2 1 0 2 5 1 5 1 18 3.49%1.05%13 0.65 0.00%0.00%0.00%
T 21 42 38 61 74 84 79 74 474 94.46%28.31%299 0.88 0.63%1.48%2.11%
R 0 1 0 4 0 0 0 1 6 1.23%0.37%4 0.25 0.00%0.00%0.00%
Bike/Ped 0 1 0 2 0 0 0 1 4 0.82%0.25%2 0.25
L 0 2 0 2 4 1 2 1 12 1.19%0.74%9 0.56 0.00%8.09%8.09%
T 48 91 140 174 133 119 121 130 956 92.06%57.11%547 0.79 0.21%0.52%0.73%
R 0 0 0 1 2 1 1 1 6 0.60%0.37%5 0.63 0.00%16.18%16.18%
Bike/Ped 4 1 8 10 9 5 10 15 64 6.15%3.82%35 0.85
80 150 203 286 251 227 234 242 1674 100.00%998 0.87 0.30%0.96%1.25%
720 891 967 998 954
Intersection Turning Movement Count Summary
Hourly VolumeWest College StreetFrom the EastWest College StreetFrom the WestStart Time
South 15th AvenueFrom the NorthSouth 15th AvenueFrom the SouthIntersection Totals
Weekday, AM Peak Period
1.03
West College Street & South 15th Avenue
Bozeman, Montana
Tuesday, November 10, 2015
N:\2200\040\DESIGN PHASE DOCS\Traffic Data\Traffic Count Data\W-College-St_S-15th-Ave_Weekday-AM_2015-11-10.xlsx Printed On: 1/15/2016
Page 1/1
Intersection:
Location:
Date Count Performed:
Count Time Period:
Seasonal Adjustment Factor:
Street/Approach Total Peak Hour %% Buses % Heavy
Road Movement 4:00 4:15 4:30 4:45 5:00 5:15 5:30 5:45 Total %%Volume PHF Trucks & RV's Vehicles
L 4 2 1 0 3 4 1 3 19 14.40%0.88%8 0.50 0.00%5.39%5.39%
T 0 0 0 0 0 0 1 0 1 0.80%0.05%1 0.25 0.00%0.00%0.00%
R 1 3 5 4 3 8 6 4 35 27.20%1.66%22 0.66 0.00%0.00%0.00%
Bike/Ped 7 6 7 9 8 14 13 8 74 57.60%3.51%45 0.79
L 1 1 1 0 0 1 0 2 6 7.89%0.29%1 0.25 0.00%0.00%0.00%
T 0 0 1 2 0 1 0 0 4 5.26%0.19%3 0.38 0.00%0.00%0.00%
R 3 5 4 4 2 3 5 3 30 38.16%1.41%14 0.70 0.00%0.00%0.00%
Bike/Ped 10 6 6 4 4 4 1 2 38 48.68%1.80%13 0.81
L 2 7 2 5 5 4 3 0 29 2.72%1.36%18 0.85 0.00%0.00%0.00%
T 122 137 127 107 135 127 100 101 955 90.09%45.18%469 0.87 0.10%0.63%0.73%
R 0 1 9 4 6 5 3 2 31 2.92%1.46%19 0.75 0.00%0.00%0.00%
Bike/Ped 6 6 7 4 6 6 7 2 45 4.28%2.14%24 0.82
L 2 2 1 2 4 6 6 3 27 3.16%1.27%19 0.75 0.00%0.00%0.00%
T 98 92 76 106 105 103 108 99 787 92.94%37.23%422 0.98 0.13%0.51%0.64%
R 1 1 1 2 2 1 2 5 15 1.82%0.73%7 0.88 0.00%0.00%0.00%
Bike/Ped 6 0 4 3 2 0 1 1 18 2.07%0.83%6 0.50
264 270 253 258 286 288 259 236 2114 100.00%1091 0.95 0.09%0.52%0.62%
1044 1067 1086 1091 1069
Intersection Turning Movement Count Summary
Hourly VolumeWest College StreetFrom the EastWest College StreetFrom the WestStart Time
South 15th AvenueFrom the NorthSouth 15th AvenueFrom the SouthIntersection Totals
Weekday, PM Peak Period
1.03
West College Street & South 15th Avenue
Bozeman, Montana
Tuesday, November 10, 2015
N:\2200\040\DESIGN PHASE DOCS\Traffic Data\Traffic Count Data\W-College-St_S-15th-Ave_Weekday-PM_2015-11-10.xlsx Printed On: 1/15/2016
APPENDIX C
TRIP GENERATION ANALYSES
Page 1/1
Bozeman 10 Year 20 Year Gallatin County 10 Year 20 Year
Year Population AGR %AGR %Population AGR %AGR %
1970 18,670 --32,505 --
1980 21,645 1.49%-42,865 2.81%-
1990 22,660 0.46%0.97%50,463 1.65%2.22%
2000 27,509 1.96%1.21%67,831 3.00%2.32%
2010 37,280 3.09%2.52%89,513 2.81%2.91%
Weighted Avg.-2.39%1.95%-2.71%2.58%
Bozeman Gallatin County
Year Population AGR %Population AGR %
2010 37,280 -89,513 -
2014 41,660 2.82%97,308 2.11%
Estimated Estimated
Bozeman Utilized Gallatin County Utilized
Year Population AGR %Population AGR %
2016 44,040 2.82%101,460 2.11%
2026 55,790 2.39%132,610 2.71%
2036 64,840 1.95%168,840 2.58%
Bozeman & Gallatin County Population Trends (1970 - 2014)
Projected Bozeman & Gallatin County Populations (2016, 2026, & 2036)
N:\2200\040\Pre-Design Docs\Traffic Data\Trip Generation Analyses\Trip-Generation_Gallatin-L+J-Center-Campus.xlsx - Population Growth Printed On: 2/4/2016 - 11:13 AM
Page 1/1
Justice Court 18th Judicial District Court
Position FTE Position FTE
Justice of the Peace 2.00 District Court Judge 3.00
Executive Assistant 1.00 Judicial Assistant 3.00
Management Supervisor 1.00 Law Clerk 3.00
Justice Court Clerks 8.00 Court Reporter 3.00
Total 12.00 Standing Master 1.00
Court Administrator 1.00
Court Services Clerk of District Court 1.00
Position FTE Management Supervisor 1.00
Director of Court Services 1.00 District Court Clerk 9.90
Pretrial Supervisor 1.00 Training Supervisor 1.00
Pretrial Officers 4.00 Total 26.90
Misdemeanor Probation Supervisor 1.00
Misdemeanor Probation/Community Corrections Officer1.00 Office of the State Public Defender
Project Coordinator 1.00 Position FTE
DUI Task Force Coordinator 0.50 Regional Deputy Public Defender 1.00
Administrative Technician 1.00 Staff Attorney 9.00
Total 10.50 Staff Non-Attorney 8.00
Total 18.00
County Attorney
Position FTE State Office of Probation & Parole
County Attorney 1.00 Position FTE
Chief Deputy County Attorney 2.00 Probation & Parole Officers 6.75
Deputy County Attorney 8.00 Total 6.75
Legal Assistant 3.00
Adminstrative Assistant 3.00
Property Witness Assistant 1.00
Total 18.00
Municipal Court
Victim Services Position FTE
Position FTE City of Bozeman Municipal Court 8.50
Detective 1.00 Total 8.50
Detective Lieutenant 1.00
Drug Task Force Support Staff 1.00 City Attorney (Bozeman Prosecutor)
Victim Witness Coordinator 1.00 Position FTE
Victim Witness Program Assistant 3.00 City Attorney's Office - Prosecution Staff 4.00
Total 7.00 Total 4.00
County Sheriff - Law Enforcement | Patrol & Administration Police Department
Position FTE Position FTE
Elected Sheriff 1.00 Police Department Staff 71.70
Under Sheriff 1.00 Total 71.70
Lieutenant 4.00
Sergeant 5.00
Deputy Sheriff 25.92
Detective 2.00 TOTAL FTE'S -287.60
Detective - Missouri River Drug Task Force 1.00
CIT Coordinator 1.00
Support Staff 4.00
Accounting Technician 1.00
Administrative Assistant 1.50
Animal Control 1.00
Total 48.42
County Sheriff - Adult Detention
Position FTE
Detention Center Administrator 1.00
Staff Sergeant 1.00
Program Director 1.00
Sergeants 6.00
Corporals 3.00
Detention Officers 35.83
Sheriff County Work Program Officer 1.00
Medical Officer 1.00
Transport Sergeant 1.00
Accounting Clerk IV 1.00
Support Staff 3.00
Re-entry Coordinator 1.00
Total 55.83
GALLATIN COUNTY STATE OF MONTANA
CITY OF BOZEMAN
2015-2016 BUDGETED FULL-TIME EMPLOYEE DATA
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Justice Court 18th Judicial District Court
Position FTE / 10K Position FTE / 10K
Justice of the Peace 0.20 District Court Judge 0.30
Executive Assistant 0.10 Judicial Assistant 0.30
Management Supervisor 0.10 Law Clerk 0.30
Justice Court Clerks 0.79 Court Reporter 0.30
Estimated Employees per 10,000 Gallatin County Persons 1.18 Standing Master 0.10
Court Administrator 0.10
Court Services Clerk of District Court 0.10
Position FTE / 10K Management Supervisor 0.10
Director of Court Services 0.10 District Court Clerk 0.98
Pretrial Supervisor 0.10 Training Supervisor 0.10
Pretrial Officers 0.39 Estimated Employees per 10,000 Gallatin County Persons 2.65
Misdemeanor Probation Supervisor 0.10
Misdemeanor Probation/Community Corrections Officer 0.10 Office of the State Public Defender
Project Coordinator 0.10 Position FTE / 10K
DUI Task Force Coordinator 0.05 Regional Deputy Public Defender NA
Administrative Technician 0.10 Staff Attorney 0.89
Estimated Employees per 10,000 Gallatin County Persons 1.03 Staff Non-Attorney 0.79
Estimated Employees per 10,000 Gallatin County Persons 1.68
County Attorney
Position FTE / 10K State Office of Probation & Parole
County Attorney NA Position FTE / 10K
Chief Deputy County Attorney 0.20 Probation & Parole Officers 0.67
Deputy County Attorney 0.79 Estimated Employees per 10,000 Gallatin County Persons 0.67
Legal Assistant 0.30
Adminstrative Assistant 0.30
Property Witness Assistant 0.10
Estimated Employees per 10,000 Gallatin County Persons 1.68
Municipal Court
Victim Services Position FTE / 10K
Position FTE / 10K City of Bozeman Municipal Court 1.93
Detective 0.10 Estimated Employees per 10,000 Bozeman Persons 1.93
Detective Lieutenant 0.10
Drug Task Force Support Staff 0.10 City Attorney (Bozeman Prosecutor)
Victim Witness Coordinator 0.10 Position FTE / 10K
Victim Witness Program Assistant 0.30 City Attorney's Office - Prosecution Staff 0.91
Estimated Employees per 10,000 Gallatin County Persons 0.69 Estimated Employees per 10,000 Bozeman Persons 0.91
County Sheriff - Law Enforcement | Patrol & Administration Police Department
Position FTE / 10K Position FTE / 10K
Elected Sheriff NA Police Department Staff 16.28
Under Sheriff NA Estimated Employees per 10,000 Bozeman Persons 16.28
Lieutenant 0.39
Sergeant 0.49
Deputy Sheriff 2.55
Detective 0.20
Detective - Missouri River Drug Task Force 0.10
CIT Coordinator 0.10
Support Staff 0.39
Accounting Technician 0.10
Administrative Assistant 0.15
Animal Control 0.10
Estimated Employees per 10,000 Gallatin County Persons 4.58
County Sheriff - Adult Detention
Position FTE / Beds
Detention Center Administrator NA
Staff Sergeant 0.01
Program Director NA
Sergeants 0.03
Corporals 0.02
Detention Officers 0.21
Sheriff County Work Program Officer 0.01
Medical Officer 0.01
Transport Sergeant 0.01
Accounting Clerk IV 0.01
Support Staff 0.02
Re-entry Coordinator 0.01
Estimated Employees per Detention Center Beds (180 in 2015)0.31
2015-2016 BUDGETED FTE DENSITY BASED ON ESTIMATED POPULATIONS
GALLATIN COUNTY STATE OF MONTANA
CITY OF BOZEMAN
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Total
Units Enter Exit Total Enter Exit Total Enter Exit Total Enter Exit Total Enter Exit Total
4.10 4.10 8.21 0.36 0.16 0.53 0.26 0.40 0.66 1.61 1.61 3.21 1.24 1.24 2.49
50%50%100%69%31%100%39%61%100%50%50%100%50%50%100%
% OF
ENTER EXIT ENTER EXIT ENTER EXIT ENTER EXIT ENTER EXIT ENTER EXIT ENTER EXIT ENTER EXIT ENTER EXIT TOTAL TOTAL
0:00 3 7 8 9 10 8 8 13 9 11 9 13 7 15 9 9 8 14 40 1.25%
1:00 8 8 6 6 4 6 3 8 8 10 7 14 13 10 7 7 10 12 36 1.13%
2:00 7 4 8 6 5 5 8 8 7 7 8 10 16 9 8 6 12 10 36 1.13%
3:00 4 4 4 6 4 10 12 15 3 5 9 8 3 7 5 7 6 8 26 0.81%
4:00 5 10 7 9 6 7 2 5 2 3 6 6 7 9 4 6 7 7 24 0.75%
5:00 7 6 7 3 16 5 21 4 14 6 11 10 6 1 14 5 9 6 34 1.06%
6:00 25 14 22 12 44 26 40 29 33 28 14 9 11 8 36 20 13 9 78 2.44%
7:00 59 28 64 22 95 41 94 41 84 29 15 13 10 17 86 30 13 15 144 4.51%
8:00 122 43 117 53 121 83 92 58 95 65 22 24 16 14 118 56 19 20 213 6.67%
9:00 84 71 81 89 55 89 78 64 20 16 14 18 81 72 17 18 188 5.89%
10:00 64 108 70 72 58 62 70 83 19 13 15 14 72 75 17 14 178 5.57%
11:00 61 95 87 89 80 120 85 109 34 35 19 16 85 96 27 25 233 7.29%
12:00 70 126 63 117 94 91 122 163 28 22 18 11 94 115 24 17 250 7.83%
13:00 85 95 113 88 107 81 24 23 16 18 111 82 20 21 234 7.33%
14:00 102 102 90 125 71 102 24 22 18 18 95 102 22 21 240 7.51%
15:00 63 109 62 81 68 120 28 34 19 18 69 96 24 26 215 6.73%
16:00 86 112 68 127 66 113 25 20 18 14 79 109 22 18 228 7.14%
17:00 60 118 69 114 64 159 52 135 79 123 39 39 25 18 70 121 33 28 252 7.89%
18:00 53 85 35 60 38 60 39 47 50 78 31 33 29 38 47 61 31 35 174 5.45%
19:00 29 38 26 39 20 35 20 40 23 35 16 27 25 25 26 34 20 26 106 3.32%
20:00 28 27 21 31 15 18 26 20 25 28 32 30 24 22 25 23 29 26 103 3.22%
21:00 14 22 14 16 12 16 10 20 20 23 18 11 17 13 15 18 17 12 62 1.94%
22:00 11 19 11 15 9 11 8 22 15 17 16 13 9 13 12 16 12 14 54 1.69%
23:00 3 15 11 12 12 18 13 17 15 13 7 17 3 12 12 14 5 15 46 1.44%
1,053 1,266 731 780 1,095 1,291 1,115 1,317 482 481 462 462 358 358 1,180 1,180 417 417
WEEKEND AVERAGEMONDAYTUESDAYWEDNESDAYTHURSDAYFRIDAY
2,360 834
HOUR
BEGIN
3,194 100.00%TOTALS 2,319 1,511 2,386 2,432 963
SUNDAY AVG.WEEKDAY AVERAGESATURDAY AVG.
924 716
Independent Variable
Budgeted Full-Time
Employees (FTE's)287.60
Trips per Unit
GALLATIN LAW & JUSTICE CENTER CAMPUS - EXISTING TRIP GENERATION ANALYSIS
Trips per Unit Trips per Unit
Average Weekday Between 7:00 and 9:00 a.m.
Average Weekday, One Hour
Between 4:00 and 6:00 a.m.
Average Weekday, One Hour
Average Saturday
Trips per Unit
Average Sunday
Trips per Unit
0.0%
1.0%
2.0%
3.0%
4.0%
5.0%
6.0%
7.0%
8.0%
9.0%
0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00Percentage of Total Time of Day
Percentage of Daily Traffic Volume Per Hour
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Estimated 2026 Bozeman Population =55,790
Estimated 2026 Gallatin County Population =132,610
Estimated 2026 Detention Center Beds =200
Justice Court 18th Judicial District Court
Estimated Employees per 10,000 Gallatin County Persons 1.18 Estimated Employees per 10,000 Gallatin County Persons 2.65
Total Estimated 2026 Employees 16.00 Total Estimated 2026 Employees 35.25
Court Services Office of the State Public Defender
Estimated Employees per 10,000 Gallatin County Persons 1.03 Estimated Employees per 10,000 Gallatin County Persons 1.68
Total Estimated 2026 Employees 13.75 Total Estimated 2026 Employees 23.00
County Attorney State Office of Probation & Parole
Estimated Employees per 10,000 Gallatin County Persons 1.68 Estimated Employees per 10,000 Gallatin County Persons 0.67
Total Estimated 2026 Employees 23.00 Total Estimated 2026 Employees 8.75
Victim Services
Estimated Employees per 10,000 Gallatin County Persons 0.69
Total Estimated 2026 Employees 9.00
Municipal Court
County Sheriff - Law Enforcement | Patrol & Administration Estimated Employees per 10,000 Bozeman Persons 1.93
Estimated Employees per 10,000 Gallatin County Persons 4.58 Total Estimated 2026 Employees 10.75
Total Estimated 2026 Employees 62.75
City Attorney (Bozeman Prosecutor)
County Sheriff - Adult Detention Estimated Employees per 10,000 Bozeman Persons 0.91
Estimated Employees per Detention Center Beds 0.31 Total Estimated 2026 Employees 5.00
Total Estimated 2026 Employees 64.00
Police Department
Estimated Employees per 10,000 Bozeman Persons 16.28
Total Estimated 2026 Employees 90.75
TOTAL ESTIMATED 2026 FTE'S -362.00
CITY OF BOZEMAN
GALLATIN COUNTY STATE OF MONTANA
ESTIMATED 2026 BUDGETED FULL-TIME EMPLOYEE DATA
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Independent Add'l
Variable Units Enter Exit Total Enter Exit Total Enter Exit Total
Budgeted
FTEs 74.40 306 305 611 27 12 39 19 30 49
FTEs 74.40 306 305 611 27 12 39 19 30 49
1Gallatin Law & Justice Center Campus - Trip Generation Data | Independent Variable: Budgeted Full-Time Employees (FTEs)
Average Vehicle Trip Ends On a:
Weekday
Average Vehicle Trip Ends On a:
Weekday, One Hour Between
7:00 and 9:00 a.m.
Average Vehicle Trip Ends On a:
Weekday, One Hour Between
4:00 and 6:00 p.m.
1 Source: Gallatin Law & Justice Center Campus - Existing Trip Generation Analysis , Morrison-Maierle, Inc., 2016
Average PM Peak Hour Trips
T = Average Vehicle Trip Ends
Total Estimated Additional Trips
X = Independent Variable Units
50% Entering
50% Exiting R2 = ****
Average Trip Generation Rate Equation:Directional Distribution:
Land Use Description
Law & Justice Center Campus
T = 0.66(X)39% Entering
61% Exiting R2 = ****T = Average Vehicle Trip Ends
X = Independent Variable Units
GALLATIN LAW & JUSTICE CENTER CAMPUS - ADDITIONAL TRIP GENERATION | 2016-2026
Average Trip Generation Rate Equation:Directional Distribution:Coefficient of Determination:
Average Trip Generation Rate Equation:Directional Distribution:Coefficient of Determination:
T = 0.53(X)69% Entering
31% Exiting R2 = ****
Coefficient of Determination:
T = 8.21(X)
T = Average Vehicle Trip Ends
X = Independent Variable Units
Average Weekday Trips Average AM Peak Hour Trips
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Estimated 2036 Bozeman Population =64,840
Estimated 2036 Gallatin County Population =168,840
Estimated 2036 Detention Center Beds =225
Justice Court 18th Judicial District Court
Estimated Employees per 10,000 Gallatin County Persons 1.18 Estimated Employees per 10,000 Gallatin County Persons 2.65
Total Estimated 2036 Employees 20.00 Total Estimated 2036 Employees 44.75
Court Services Office of the State Public Defender
Estimated Employees per 10,000 Gallatin County Persons 1.03 Estimated Employees per 10,000 Gallatin County Persons 1.68
Total Estimated 2036 Employees 17.50 Total Estimated 2036 Employees 29.00
County Attorney State Office of Probation & Parole
Estimated Employees per 10,000 Gallatin County Persons 1.68 Estimated Employees per 10,000 Gallatin County Persons 0.67
Total Estimated 2036 Employees 29.00 Total Estimated 2036 Employees 11.25
Victim Services
Estimated Employees per 10,000 Gallatin County Persons 0.69
Total Estimated 2036 Employees 12.00
Municipal Court
County Sheriff - Law Enforcement | Patrol & Administration Estimated Employees per 10,000 Bozeman Persons 1.93
Estimated Employees per 10,000 Gallatin County Persons 4.58 Total Estimated 2036 Employees 12.50
Total Estimated 2036 Employees 79.25
City Attorney (Bozeman Prosecutor)
County Sheriff - Adult Detention Estimated Employees per 10,000 Bozeman Persons 0.91
Estimated Employees per Detention Center Beds 0.31 Total Estimated 2036 Employees 6.00
Total Estimated 2036 Employees 71.75
Police Department
Estimated Employees per 10,000 Bozeman Persons 16.28
Total Estimated 2036 Employees 105.50
TOTAL ESTIMATED 2036 FTE'S -438.50
ESTIMATED 2036 BUDGETED FULL-TIME EMPLOYEE DATA
GALLATIN COUNTY STATE OF MONTANA
CITY OF BOZEMAN
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Independent Add'l
Variable Units Enter Exit Total Enter Exit Total Enter Exit Total
Budgeted
FTEs 76.50 314 314 628 28 13 41 19 31 50
FTEs 76.50 314 314 628 28 13 41 19 31 50
1Gallatin Law & Justice Center Campus - Trip Generation Data | Independent Variable: Budgeted Full-Time Employees (FTEs)
Average Vehicle Trip Ends On a:
Weekday
Average Vehicle Trip Ends On a:
Weekday, One Hour Between
7:00 and 9:00 a.m.
Average Vehicle Trip Ends On a:
Weekday, One Hour Between
4:00 and 6:00 p.m.
1 Source: Gallatin Law & Justice Center Campus - Existing Trip Generation Analysis , Morrison-Maierle, Inc., 2016
Land Use Description
GALLATIN LAW & JUSTICE CENTER CAMPUS - ADDITIONAL TRIP GENERATION | 2026-2036
Average Weekday Trips Average AM Peak Hour Trips Average PM Peak Hour Trips
Law & Justice Center Campus
Total Estimated Additional Trips
Average Trip Generation Rate Equation:Coefficient of Determination:
T = 8.21(X)50% Entering
50% Exiting R2 = ****T = Average Vehicle Trip Ends
X = Independent Variable Units
Directional Distribution:
Average Trip Generation Rate Equation:Directional Distribution:Coefficient of Determination:
T = 0.53(X)69% Entering
31% Exiting R2 = ****T = Average Vehicle Trip Ends
X = Independent Variable Units
Average Trip Generation Rate Equation:Directional Distribution:Coefficient of Determination:
T = 0.66(X)39% Entering
61% Exiting R2 = ****T = Average Vehicle Trip Ends
X = Independent Variable Units
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APPENDIX D
CAPACITY & LEVEL OF SERVICE ANALYSES
APPENDIX D-1
2016 - EXISTING CONDITIONS
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Existing Conditions - 2016 10:26:11
Weekday, AM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 1 - S 19th Ave & W Koch St
V/C 0.363 (Critical V/C 0.451) Control Delay 7.5 Level of Service A
Sq 11 Phase 1 Phase 2
**/**
North
Cmax=Gmax= 62.6"Gmax= 46.0"
120"Gavg= 92.6"Gavg= 16.0"
Cavg=Y+Rc= 5.4"Y+Rc= 6.0"
120"
Gmax= 62.6"Gmax= 46.0"
Gavg= 92.6"Gavg= 16.0"
Y+Rc= 5.4"Y+Rc= 6.0"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 0.8 A
R+ T 22/2 0.522 0.772 3582 2764 1118 0.405 0.9 A 31 ft
92.6"16.0"
92.6"16.0"
L 13/1 0.522 0.772 832 702 64 0.091 0.3 A 2 ft
NB Approach 0.4 A
R+ T 22/2 0.522 0.772 3555 2743 641 0.234 0.4 *A 14 ft
L 13/1 0.522 0.772 532 471 30 0.064 0.3 A 2 ft
WB Approach 49.3 D
R+ T+ L 15/1 0.383 0.133 1585 252 127 0.504 49.3 D 152 ft
EB Approach 50.6 D
R+ T+ L 15/1 0.383 0.133 1791 274 172 0.627 50.6 *D 197 ft
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Existing Conditions - 2016 10:50:30
Weekday, PM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 1 - S 19th Ave & W Koch St
V/C 0.399 (Critical V/C 0.458) Control Delay 6.8 Level of Service A
Sq 11 Phase 1 Phase 2
**/**
North
Cmax=Gmax= 34.6"Gmax= 29.0"
75"Gavg= 47.6"Gavg= 16.0"
Cavg=Y+Rc= 5.4"Y+Rc= 6.0"
75"
Gmax= 34.6"Gmax= 29.0"
Gavg= 47.6"Gavg= 16.0"
Y+Rc= 5.4"Y+Rc= 6.0"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 3.4 A
R+ T 22/2 0.461 0.635 3620 2298 847 0.369 3.3 A 107 ft
47.6"16.0"
47.6"16.0"
L 13/1 0.461 0.635 567 415 66 0.159 4.3 A 12 ft
NB Approach 3.8 A
R+ T 22/2 0.461 0.635 3620 2298 1051 0.457 3.8 *A 141 ft
L 13/1 0.461 0.635 681 493 70 0.142 3.7 A 12 ft
WB Approach 25.8 C+
R+ T+ L 15/1 0.387 0.213 1781 437 174 0.398 25.8 C+116 ft
EB Approach 25.7 C+
R+ T+ L 15/1 0.387 0.213 1727 430 165 0.384 25.7 *C+110 ft
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Existing Conditions - 2016 11:11:02
Weekday, AM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 2 - S 19th Ave & W College St
V/C 0.451 (Critical V/C 0.624) Control Delay 27.3 Level of Service C+
Sq 54 Phase 1 Phase 2 Phase 3 Phase 4 Phase 5
**/**
North
Cmax=Gmax= 11.0"Gmax= 39.5" Gmax= 11.0"Gmax= 37.4"
120"Gavg= 10.2"Gavg= 52.7" Gavg= 10.0"Gavg= 25.9"
Cavg=Y+Rc= 4.0"Y+Rc= 6.5" Y+Rc= 4.0"Y+Rc= 6.6"
120"
Gmax= 21.0" Gmax= 29.5"Gmax= 11.0"Gmax= 37.4"
Gavg= 14.0" Gavg= 48.9"Gavg= 10.4"Gavg= 25.6"
Y+Rc= 4.0" Y+Rc= 6.5"Y+Rc= 4.0"Y+Rc= 6.6"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 17.4 B
R+ T 22/2 0.329 0.439 3554 1560 647 0.415 18.1 B 378 ft
10.2"52.7"10.0"25.9"
14.0"48.9"10.4"25.6"
L 13/1 0.175 0.117 1860 532 204 0.383 15.2 B 122 ft
NB Approach 20.4 C+
R+ T 22/2 0.246 0.408 3483 1420 612 0.431 21.0 *C+394 ft
L 13/1 0.092 0.085 1865 497 80 0.161 16.0 B 51 ft
WB Approach 37.3 D+
R 11/1 1572 523 40 0.076 27.5 C+36 ft
T 11/1 0.312 0.216 1872 405 173 0.428 41.3 D+181 ft
L 13/1 0.092 0.087 1869 257 87 0.339 33.7 C 86 ft
EB Approach 45.1 D
R 11/1 0.025 0.213 1609 480 159 0.331 33.2 C 152 ft
T 11/1 0.312 0.213 1872 399 342 0.857 53.5 *D 372 ft
L 13/1 0.092 0.084 1882 386 73 0.189 31.5 C 70 ft
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Existing Conditions - 2016 11:19:36
Weekday, PM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 2 - S 19th Ave & W College St
V/C 0.510 (Critical V/C 0.712) Control Delay 32.1 Level of Service C
Sq 64 Phase 1 Phase 2 Phase 3 Phase 4 Phase 5
**/**
North
Cmax=Gmax= 34.0" Gmax= 31.5"Gmax= 16.0"Gmax= 47.4"
150"Gavg= 14.2" Gavg= 68.6"Gavg= 13.2"Gavg= 32.9"
Cavg=Y+Rc= 4.0" Y+Rc= 6.5"Y+Rc= 4.0"Y+Rc= 6.6"
150"
Gmax= 18.0"Gmax= 47.5" Gmax= 16.0"Gmax= 47.4"
Gavg= 13.9"Gavg= 68.9" Gavg= 14.0"Gavg= 32.1"
Y+Rc= 4.0"Y+Rc= 6.5" Y+Rc= 4.0"Y+Rc= 6.6"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 19.9 B
R+ T 22/2 0.210 0.458 3643 1667 703 0.422 20.4 C+465 ft
14.2"68.6"13.2"32.9"
13.9"68.9"14.0"32.1"
L 13/1 0.120 0.093 1874 453 134 0.296 17.5 B 100 ft
NB Approach 20.9 C+
R+ T 22/2 0.317 0.459 3605 1656 828 0.500 21.6 *C+564 ft
L 13/1 0.227 0.095 1873 504 257 0.510 18.8 B 183 ft
WB Approach 53.6 D
R 11/1 1601 501 145 0.290 39.3 D+168 ft
T 11/1 0.316 0.219 1879 412 357 0.867 64.5 E+470 ft
L 13/1 0.107 0.093 1882 310 173 0.558 43.0 D+198 ft
EB Approach 49.2 D
R 11/1 0.020 0.214 1594 492 127 0.258 39.3 D+151 ft
T 11/1 0.316 0.214 1883 403 269 0.668 56.0 *E+338 ft
L 13/1 0.107 0.088 1882 248 68 0.275 41.1 D+84 ft
APPENDIX D-2
ESTIMATED 2026 BACKGROUND TRAFFIC
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Estimated 2026 Background Traffic 12:57:57
Weekday, AM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 1 - S 19th Ave & W Koch St
V/C 0.386 (Critical V/C 0.480) Control Delay 6.9 Level of Service A
Sq 11 Phase 1 Phase 2
**/**
North
Cmax=Gmax= 62.6"Gmax= 46.0"
120"Gavg= 92.6"Gavg= 16.0"
Cavg=Y+Rc= 5.4"Y+Rc= 6.0"
120"
Gmax= 62.6"Gmax= 46.0"
Gavg= 92.6"Gavg= 16.0"
Y+Rc= 5.4"Y+Rc= 6.0"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 1.0 A
R+ T 22/2 0.522 0.772 3584 2766 1226 0.443 1.0 A 36 ft
92.6"16.0"
92.6"16.0"
L 13/1 0.522 0.772 785 666 62 0.093 0.3 A 2 ft
NB Approach 0.4 A
R+ T 22/2 0.522 0.772 3557 2745 703 0.256 0.5 *A 16 ft
L 13/1 0.522 0.772 480 431 29 0.067 0.3 A 2 ft
WB Approach 49.1 D
R+ T+ L 15/1 0.383 0.133 1613 256 124 0.484 49.1 D 149 ft
EB Approach 50.3 D
R+ T+ L 15/1 0.383 0.133 1793 275 166 0.604 50.3 *D 190 ft
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Estimated 2026 Background Traffic 13:01:57
Weekday, PM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 1 - S 19th Ave & W Koch St
V/C 0.454 (Critical V/C 0.511) Control Delay 6.9 Level of Service A
Sq 11 Phase 1 Phase 2
**/**
North
Cmax=Gmax= 34.6"Gmax= 29.0"
75"Gavg= 47.6"Gavg= 16.0"
Cavg=Y+Rc= 5.4"Y+Rc= 6.0"
75"
Gmax= 34.6"Gmax= 29.0"
Gavg= 47.6"Gavg= 16.0"
Y+Rc= 5.4"Y+Rc= 6.0"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 3.7 A
R+ T 22/2 0.461 0.635 3622 2299 977 0.425 3.6 A 128 ft
47.6"16.0"
47.6"16.0"
L 13/1 0.461 0.635 489 361 68 0.188 5.2 A 14 ft
NB Approach 4.3 A
R+ T 22/2 0.461 0.635 3623 2300 1207 0.525 4.3 *A 170 ft
L 13/1 0.461 0.635 603 440 71 0.162 4.1 A 13 ft
WB Approach 25.9 C+
R+ T+ L 15/1 0.387 0.213 1782 437 179 0.410 25.9 C+119 ft
EB Approach 25.7 C+
R+ T+ L 15/1 0.387 0.213 1730 431 169 0.392 25.7 *C+113 ft
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Estimated 2026 Background Traffic 13:12:26
Weekday, AM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 2 - S 19th Ave & W College St
V/C 0.516 (Critical V/C 0.705) Control Delay 29.1 Level of Service C
Sq 54 Phase 1 Phase 2 Phase 3 Phase 4 Phase 5
**/**
North
Cmax=Gmax= 11.0"Gmax= 39.5" Gmax= 11.0"Gmax= 37.4"
120"Gavg= 10.4"Gavg= 49.9" Gavg= 10.3"Gavg= 28.3"
Cavg=Y+Rc= 4.0"Y+Rc= 6.5" Y+Rc= 4.0"Y+Rc= 6.6"
120"
Gmax= 21.0" Gmax= 29.5"Gmax= 11.0"Gmax= 37.4"
Gavg= 14.0" Gavg= 46.3"Gavg= 10.6"Gavg= 28.0"
Y+Rc= 4.0" Y+Rc= 6.5"Y+Rc= 4.0"Y+Rc= 6.6"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 20.8 C+
R+ T 22/2 0.329 0.416 3557 1480 759 0.513 21.7 C+477 ft
10.4"49.9"10.3"28.3"
14.0"46.3"10.6"28.0"
L 13/1 0.175 0.117 1860 469 228 0.486 17.9 B 142 ft
NB Approach 24.0 C+
R+ T 22/2 0.246 0.386 3488 1347 712 0.529 24.8 *C+492 ft
L 13/1 0.092 0.087 1865 431 87 0.202 17.9 B 59 ft
WB Approach 35.7 D+
R 11/1 1572 554 44 0.079 25.9 C+39 ft
T 11/1 0.312 0.236 1872 442 189 0.428 39.6 D+191 ft
L 13/1 0.092 0.088 1869 259 96 0.371 32.6 C 92 ft
EB Approach 45.0 D
R 11/1 0.025 0.234 1609 515 175 0.340 31.5 C 161 ft
T 11/1 0.312 0.234 1872 437 380 0.869 54.5 *D 413 ft
L 13/1 0.092 0.086 1882 403 81 0.201 29.8 C 76 ft
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Estimated 2026 Background Traffic 13:16:41
Weekday, PM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 2 - S 19th Ave & W College St
V/C 0.570 (Critical V/C 0.780) Control Delay 33.8 Level of Service C
Sq 64 Phase 1 Phase 2 Phase 3 Phase 4 Phase 5
**/**
North
Cmax=Gmax= 34.0" Gmax= 31.5"Gmax= 16.0"Gmax= 47.4"
150"Gavg= 15.6" Gavg= 65.0"Gavg= 13.3"Gavg= 34.9"
Cavg=Y+Rc= 4.0" Y+Rc= 6.5"Y+Rc= 4.0"Y+Rc= 6.6"
150"
Gmax= 18.0"Gmax= 47.5" Gmax= 16.0"Gmax= 47.4"
Gavg= 14.0"Gavg= 66.7" Gavg= 14.0"Gavg= 34.3"
Y+Rc= 4.0"Y+Rc= 6.5" Y+Rc= 4.0"Y+Rc= 6.6"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 23.8 C+
R+ T 22/2 0.210 0.433 3644 1580 806 0.510 24.5 C+596 ft
15.6"65.0"13.3"34.9"
14.0"66.7"14.0"34.3"
L 13/1 0.120 0.093 1874 396 147 0.371 20.4 C+117 ft
NB Approach 24.4 C+
R+ T 22/2 0.317 0.445 3608 1604 951 0.593 25.2 *C+714 ft
L 13/1 0.227 0.104 1873 457 276 0.604 21.4 C+202 ft
WB Approach 53.2 D
R 11/1 1602 523 159 0.304 38.2 D+179 ft
T 11/1 0.316 0.233 1879 437 381 0.871 64.6 E+500 ft
L 13/1 0.107 0.093 1882 311 187 0.600 42.8 D+211 ft
EB Approach 47.7 D
R 11/1 0.020 0.228 1594 530 137 0.258 36.8 D+156 ft
T 11/1 0.316 0.228 1883 430 292 0.679 54.7 *D 361 ft
L 13/1 0.107 0.089 1882 250 73 0.292 40.0 D+88 ft
APPENDIX D-3
ESTIMATED 2026 TOTAL TRAFFIC
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Estimated 2026 Total Traffic 14:28:19
Weekday, AM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 1 - S 19th Ave & W Koch St
V/C 0.390 (Critical V/C 0.486) Control Delay 6.9 Level of Service A
Sq 11 Phase 1 Phase 2
**/**
North
Cmax=Gmax= 62.6"Gmax= 46.0"
120"Gavg= 92.6"Gavg= 16.0"
Cavg=Y+Rc= 5.4"Y+Rc= 6.0"
120"
Gmax= 62.6"Gmax= 46.0"
Gavg= 92.6"Gavg= 16.0"
Y+Rc= 5.4"Y+Rc= 6.0"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 1.0 A
R+ T 22/2 0.522 0.772 3584 2766 1241 0.449 1.1 A 37 ft
92.6"16.0"
92.6"16.0"
L 13/1 0.522 0.772 779 662 62 0.094 0.3 A 2 ft
NB Approach 0.5 A
R+ T 22/2 0.522 0.772 3557 2745 711 0.259 0.5 *A 16 ft
L 13/1 0.522 0.772 474 425 29 0.068 0.3 A 2 ft
WB Approach 49.0 D
R+ T+ L 15/1 0.383 0.133 1605 255 123 0.482 49.0 D 148 ft
EB Approach 50.4 D
R+ T+ L 15/1 0.383 0.133 1793 275 168 0.611 50.4 *D 192 ft
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Estimated 2026 Total Traffic 14:32:09
Weekday, PM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 1 - S 19th Ave & W Koch St
V/C 0.460 (Critical V/C 0.517) Control Delay 6.9 Level of Service A
Sq 11 Phase 1 Phase 2
**/**
North
Cmax=Gmax= 34.6"Gmax= 29.0"
75"Gavg= 47.6"Gavg= 16.0"
Cavg=Y+Rc= 5.4"Y+Rc= 6.0"
75"
Gmax= 34.6"Gmax= 29.0"
Gavg= 47.6"Gavg= 16.0"
Y+Rc= 5.4"Y+Rc= 6.0"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 3.8 A
R+ T 22/2 0.461 0.635 3622 2299 988 0.430 3.7 A 130 ft
47.6"16.0"
47.6"16.0"
L 13/1 0.461 0.635 481 356 68 0.191 5.3 A 14 ft
NB Approach 4.4 A
R+ T 22/2 0.461 0.635 3623 2300 1225 0.533 4.4 *A 174 ft
L 13/1 0.461 0.635 596 435 71 0.163 4.2 A 13 ft
WB Approach 25.9 C+
R+ T+ L 15/1 0.387 0.213 1782 437 179 0.410 25.9 C+119 ft
EB Approach 25.7 C+
R+ T+ L 15/1 0.387 0.213 1730 431 169 0.392 25.7 *C+113 ft
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Estimated 2026 Total Traffic 14:47:41
Weekday, AM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 2 - S 19th Ave & W College St
V/C 0.519 (Critical V/C 0.709) Control Delay 29.2 Level of Service C
Sq 54 Phase 1 Phase 2 Phase 3 Phase 4 Phase 5
**/**
North
Cmax=Gmax= 11.0"Gmax= 39.5" Gmax= 11.0"Gmax= 37.4"
120"Gavg= 10.4"Gavg= 49.8" Gavg= 10.3"Gavg= 28.5"
Cavg=Y+Rc= 4.0"Y+Rc= 6.5" Y+Rc= 4.0"Y+Rc= 6.6"
120"
Gmax= 21.0" Gmax= 29.5"Gmax= 11.0"Gmax= 37.4"
Gavg= 14.0" Gavg= 46.2"Gavg= 10.6"Gavg= 28.1"
Y+Rc= 4.0" Y+Rc= 6.5"Y+Rc= 4.0"Y+Rc= 6.6"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 21.0 C+
R+ T 22/2 0.329 0.415 3557 1476 761 0.516 21.8 C+482 ft
10.4"49.8"10.3"28.5"
14.0"46.2"10.6"28.1"
L 13/1 0.175 0.117 1860 466 228 0.489 18.0 B 142 ft
NB Approach 24.3 C+
R+ T 22/2 0.246 0.385 3488 1343 717 0.534 25.0 *C+499 ft
L 13/1 0.092 0.087 1865 429 87 0.203 17.9 B 59 ft
WB Approach 35.7 D+
R 11/1 1572 556 44 0.079 25.8 C+39 ft
T 11/1 0.312 0.237 1872 444 190 0.428 39.5 D+192 ft
L 13/1 0.092 0.088 1869 259 97 0.375 32.5 C 93 ft
EB Approach 45.1 D
R 11/1 0.025 0.235 1609 517 175 0.339 31.4 C 161 ft
T 11/1 0.312 0.235 1872 439 382 0.870 54.6 *D 415 ft
L 13/1 0.092 0.086 1882 404 81 0.201 29.7 C 76 ft
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Estimated 2026 Total Traffic 14:52:05
Weekday, PM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 2 - S 19th Ave & W College St
V/C 0.573 (Critical V/C 0.785) Control Delay 33.9 Level of Service C
Sq 64 Phase 1 Phase 2 Phase 3 Phase 4 Phase 5
**/**
North
Cmax=Gmax= 34.0" Gmax= 31.5"Gmax= 16.0"Gmax= 47.4"
150"Gavg= 15.7" Gavg= 64.8"Gavg= 13.3"Gavg= 35.1"
Cavg=Y+Rc= 4.0" Y+Rc= 6.5"Y+Rc= 4.0"Y+Rc= 6.6"
150"
Gmax= 18.0"Gmax= 47.5" Gmax= 16.0"Gmax= 47.4"
Gavg= 14.0"Gavg= 66.5" Gavg= 14.0"Gavg= 34.4"
Y+Rc= 4.0"Y+Rc= 6.5" Y+Rc= 4.0"Y+Rc= 6.6"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 24.1 C+
R+ T 22/2 0.210 0.432 3644 1575 811 0.515 24.7 C+603 ft
15.7"64.8"13.3"35.1"
14.0"66.5"14.0"34.4"
L 13/1 0.120 0.093 1874 394 147 0.373 20.6 C+118 ft
NB Approach 24.6 C+
R+ T 22/2 0.317 0.443 3607 1600 954 0.596 25.4 *C+720 ft
L 13/1 0.227 0.104 1873 454 276 0.608 21.6 C+202 ft
WB Approach 53.2 D
R 11/1 1602 525 159 0.303 38.0 D+179 ft
T 11/1 0.316 0.234 1879 440 383 0.871 64.6 E+502 ft
L 13/1 0.107 0.093 1882 311 189 0.607 42.9 D+213 ft
EB Approach 47.6 D
R 11/1 0.020 0.229 1594 532 137 0.257 36.7 D+156 ft
T 11/1 0.316 0.229 1883 432 294 0.680 54.7 *D 363 ft
L 13/1 0.107 0.089 1882 250 73 0.292 39.9 D+88 ft
APPENDIX D-4
ESTIMATED 2036 BACKGROUND TRAFFIC
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Estimated 2036 Background Traffic 15:57:49
Weekday, AM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 1 - S 19th Ave & W Koch St
V/C 0.446 (Critical V/C 0.554) Control Delay 6.6 Level of Service A
Sq 11 Phase 1 Phase 2
**/**
North
Cmax=Gmax= 62.6"Gmax= 46.0"
120"Gavg= 92.6"Gavg= 16.0"
Cavg=Y+Rc= 5.4"Y+Rc= 6.0"
120"
Gmax= 62.6"Gmax= 46.0"
Gavg= 92.6"Gavg= 16.0"
Y+Rc= 5.4"Y+Rc= 6.0"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 1.4 A
R+ T 22/2 0.522 0.772 3585 2767 1451 0.524 1.4 A 50 ft
92.6"16.0"
92.6"16.0"
L 13/1 0.522 0.772 698 599 65 0.109 0.4 A 3 ft
NB Approach 0.6 A
R+ T 22/2 0.522 0.772 3559 2747 829 0.302 0.6 *A 20 ft
L 13/1 0.522 0.772 387 359 31 0.086 0.5 A 2 ft
WB Approach 49.4 D
R+ T+ L 15/1 0.383 0.133 1578 251 129 0.513 49.4 D 154 ft
EB Approach 50.6 D
R+ T+ L 15/1 0.383 0.133 1786 274 172 0.628 50.6 *D 197 ft
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Estimated 2036 Background Traffic 16:08:24
Weekday, PM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 1 - S 19th Ave & W Koch St
V/C 0.532 (Critical V/C 0.587) Control Delay 7.3 Level of Service A
Sq 11 Phase 1 Phase 2
**/**
North
Cmax=Gmax= 34.6"Gmax= 29.0"
75"Gavg= 47.6"Gavg= 16.0"
Cavg=Y+Rc= 5.4"Y+Rc= 6.0"
75"
Gmax= 34.6"Gmax= 29.0"
Gavg= 47.6"Gavg= 16.0"
Y+Rc= 5.4"Y+Rc= 6.0"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 4.3 A
R+ T 22/2 0.461 0.635 3624 2301 1155 0.502 4.2 A 160 ft
47.6"16.0"
47.6"16.0"
L 13/1 0.461 0.635 398 298 70 0.235 7.1 A 18 ft
NB Approach 5.3 A
R+ T 22/2 0.461 0.635 3626 2302 1423 0.618 5.3 *A 219 ft
L 13/1 0.461 0.635 509 376 73 0.194 5.1 A 15 ft
WB Approach 26.0 C+
R+ T+ L 15/1 0.387 0.213 1778 436 187 0.429 26.0 C+124 ft
EB Approach 25.8 C+
R+ T+ L 15/1 0.387 0.213 1734 432 174 0.403 25.8 *C+116 ft
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Estimated 2036 Background Traffic 16:25:06
Weekday, AM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 2 - S 19th Ave & W College St
V/C 0.608 (Critical V/C 0.802) Control Delay 32.4 Level of Service C
Sq 54 Phase 1 Phase 2 Phase 3 Phase 4 Phase 5
**/**
North
Cmax=Gmax= 11.0"Gmax= 39.5" Gmax= 11.0"Gmax= 37.4"
120"Gavg= 10.6"Gavg= 46.9" Gavg= 10.4"Gavg= 31.1"
Cavg=Y+Rc= 4.0"Y+Rc= 6.5" Y+Rc= 4.0"Y+Rc= 6.6"
120"
Gmax= 21.0" Gmax= 29.5"Gmax= 11.0"Gmax= 37.4"
Gavg= 14.0" Gavg= 43.4"Gavg= 10.7"Gavg= 30.8"
Y+Rc= 4.0" Y+Rc= 6.5"Y+Rc= 4.0"Y+Rc= 6.6"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 26.2 C+
R+ T 22/2 0.329 0.391 3558 1389 897 0.646 27.3 C+646 ft
10.6"46.9"10.4"31.1"
14.0"43.4"10.7"30.8"
L 13/1 0.175 0.117 1860 401 255 0.637 22.3 C+168 ft
NB Approach 29.8 C
R+ T 22/2 0.246 0.362 3493 1264 835 0.661 30.8 *C 651 ft
L 13/1 0.092 0.088 1865 359 96 0.267 20.5 C+69 ft
WB Approach 34.1 C
R 11/1 1572 591 49 0.083 24.2 C+41 ft
T 11/1 0.312 0.259 1872 485 209 0.431 37.7 D+204 ft
L 13/1 0.092 0.089 1869 259 108 0.417 31.6 C 100 ft
EB Approach 45.3 D
R 11/1 0.025 0.257 1609 554 191 0.345 29.6 C 168 ft
T 11/1 0.312 0.257 1872 480 425 0.885 55.9 *E+464 ft
L 13/1 0.092 0.087 1882 420 88 0.210 27.9 C 79 ft
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Estimated 2036 Background Traffic 16:29:19
Weekday, PM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 2 - S 19th Ave & W College St
V/C 0.670 (Critical V/C 0.876) Control Delay 38.0 Level of Service D+
Sq 64 Phase 1 Phase 2 Phase 3 Phase 4 Phase 5
**/**
North
Cmax=Gmax= 34.0" Gmax= 31.5"Gmax= 16.0"Gmax= 47.4"
150"Gavg= 17.5" Gavg= 59.9"Gavg= 13.5"Gavg= 38.0"
Cavg=Y+Rc= 4.0" Y+Rc= 6.5"Y+Rc= 4.0"Y+Rc= 6.6"
150"
Gmax= 18.0"Gmax= 47.5" Gmax= 16.0"Gmax= 47.4"
Gavg= 14.0"Gavg= 63.5" Gavg= 14.5"Gavg= 37.0"
Y+Rc= 4.0"Y+Rc= 6.5" Y+Rc= 4.0"Y+Rc= 6.6"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 31.3 C
R+ T 22/2 0.210 0.399 3645 1456 953 0.655 32.2 C 834 ft
17.5"59.9"13.5"38.0"
14.0"63.5"14.5"37.0"
L 13/1 0.120 0.093 1874 325 163 0.502 26.0 C+138 ft
NB Approach 31.5 C
R+ T 22/2 0.317 0.423 3611 1527 1119 0.733 32.5 *C 985 ft
L 13/1 0.227 0.117 1873 398 303 0.761 27.5 C 230 ft
WB Approach 52.9 D
R 11/1 1603 556 177 0.319 36.4 D+192 ft
T 11/1 0.316 0.253 1879 476 418 0.879 64.8 E+546 ft
L 13/1 0.107 0.096 1882 315 209 0.663 43.3 D+231 ft
EB Approach 46.3 D
R 11/1 0.020 0.247 1594 580 150 0.259 33.8 C 162 ft
T 11/1 0.316 0.247 1883 465 327 0.704 53.9 *D 398 ft
L 13/1 0.107 0.090 1882 252 80 0.318 38.7 D+94 ft
APPENDIX D-5
ESTIMATED 2036 TOTAL TRAFFIC
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Estimated 2036 Total Traffic 16:50:42
Weekday, AM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 1 - S 19th Ave & W Koch St
V/C 0.451 (Critical V/C 0.559) Control Delay 6.6 Level of Service A
Sq 11 Phase 1 Phase 2
**/**
North
Cmax=Gmax= 62.6"Gmax= 46.0"
120"Gavg= 92.6"Gavg= 16.0"
Cavg=Y+Rc= 5.4"Y+Rc= 6.0"
120"
Gmax= 62.6"Gmax= 46.0"
Gavg= 92.6"Gavg= 16.0"
Y+Rc= 5.4"Y+Rc= 6.0"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 1.4 A
R+ T 22/2 0.522 0.772 3585 2767 1466 0.530 1.5 A 51 ft
92.6"16.0"
92.6"16.0"
L 13/1 0.522 0.772 693 595 65 0.109 0.4 A 3 ft
NB Approach 0.6 A
R+ T 22/2 0.522 0.772 3559 2747 837 0.305 0.6 *A 20 ft
L 13/1 0.522 0.772 382 355 31 0.087 0.5 A 2 ft
WB Approach 49.4 D
R+ T+ L 15/1 0.383 0.133 1574 251 129 0.514 49.4 D 154 ft
EB Approach 50.6 D
R+ T+ L 15/1 0.383 0.133 1785 274 173 0.632 50.6 *D 198 ft
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Estimated 2036 Total Traffic 16:53:17
Weekday, PM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 1 - S 19th Ave & W Koch St
V/C 0.538 (Critical V/C 0.593) Control Delay 7.4 Level of Service A
Sq 11 Phase 1 Phase 2
**/**
North
Cmax=Gmax= 34.6"Gmax= 29.0"
75"Gavg= 47.6"Gavg= 16.0"
Cavg=Y+Rc= 5.4"Y+Rc= 6.0"
75"
Gmax= 34.6"Gmax= 29.0"
Gavg= 47.6"Gavg= 16.0"
Y+Rc= 5.4"Y+Rc= 6.0"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 4.4 A
R+ T 22/2 0.461 0.635 3624 2301 1166 0.507 4.2 A 162 ft
47.6"16.0"
47.6"16.0"
L 13/1 0.461 0.635 391 293 70 0.239 7.3 A 18 ft
NB Approach 5.4 A
R+ T 22/2 0.461 0.635 3626 2302 1441 0.626 5.4 *A 223 ft
L 13/1 0.461 0.635 504 372 73 0.196 5.1 A 15 ft
WB Approach 26.0 C+
R+ T+ L 15/1 0.387 0.213 1778 436 187 0.429 26.0 C+124 ft
EB Approach 25.8 C+
R+ T+ L 15/1 0.387 0.213 1734 432 174 0.403 25.8 *C+116 ft
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Estimated 2036 Total Traffic 17:00:47
Weekday, AM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 2 - S 19th Ave & W College St
V/C 0.612 (Critical V/C 0.806) Control Delay 32.6 Level of Service C
Sq 54 Phase 1 Phase 2 Phase 3 Phase 4 Phase 5
**/**
North
Cmax=Gmax= 11.0"Gmax= 39.5" Gmax= 11.0"Gmax= 37.4"
120"Gavg= 10.6"Gavg= 46.7" Gavg= 10.4"Gavg= 31.2"
Cavg=Y+Rc= 4.0"Y+Rc= 6.5" Y+Rc= 4.0"Y+Rc= 6.6"
120"
Gmax= 21.0" Gmax= 29.5"Gmax= 11.0"Gmax= 37.4"
Gavg= 14.0" Gavg= 43.3"Gavg= 10.7"Gavg= 30.9"
Y+Rc= 4.0" Y+Rc= 6.5"Y+Rc= 4.0"Y+Rc= 6.6"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 26.4 C+
R+ T 22/2 0.329 0.389 3558 1386 899 0.649 27.6 C 651 ft
10.6"46.7"10.4"31.2"
14.0"43.3"10.7"30.9"
L 13/1 0.175 0.117 1860 397 255 0.642 22.5 C+168 ft
NB Approach 30.1 C
R+ T 22/2 0.246 0.361 3491 1260 841 0.668 31.2 *C 661 ft
L 13/1 0.092 0.088 1865 358 96 0.268 20.6 C+69 ft
WB Approach 34.0 C
R 11/1 1572 592 49 0.083 24.1 C+41 ft
T 11/1 0.312 0.260 1872 487 210 0.431 37.6 D+204 ft
L 13/1 0.092 0.089 1869 259 109 0.421 31.6 C 101 ft
EB Approach 45.3 D
R 11/1 0.025 0.258 1609 556 191 0.344 29.5 C 168 ft
T 11/1 0.312 0.258 1872 482 427 0.886 56.0 *E+466 ft
L 13/1 0.092 0.087 1882 420 88 0.209 27.8 C 79 ft
Traffic Impact Study: Gallatin Law & Justice Center 02/08/16
Estimated 2036 Total Traffic 17:03:59
Weekday, PM Peak Hour
TEAPAC[Ver 8.62.01] - Capacity Analysis Summary (HCM 2010)
Intersection Averages for Int # 2 - S 19th Ave & W College St
V/C 0.674 (Critical V/C 0.879) Control Delay 38.2 Level of Service D+
Sq 64 Phase 1 Phase 2 Phase 3 Phase 4 Phase 5
**/**
North
Cmax=Gmax= 34.0" Gmax= 31.5"Gmax= 16.0"Gmax= 47.4"
150"Gavg= 17.6" Gavg= 59.6"Gavg= 13.5"Gavg= 38.2"
Cavg=Y+Rc= 4.0" Y+Rc= 6.5"Y+Rc= 4.0"Y+Rc= 6.6"
150"
Gmax= 18.0"Gmax= 47.5" Gmax= 16.0"Gmax= 47.4"
Gavg= 14.0"Gavg= 63.2" Gavg= 14.6"Gavg= 37.1"
Y+Rc= 4.0"Y+Rc= 6.5" Y+Rc= 4.0"Y+Rc= 6.6"
Lane Width/g/C Adj HCM L Queue
Group Lanes Max Avg SatFlo Capcty Volume v/c Delay S Model 1
SB Approach 31.7 C
R+ T 22/2 0.210 0.398 3646 1449 957 0.660 32.6 C 845 ft
17.6"59.6"13.5"38.2"
14.0"63.2"14.6"37.1"
L 13/1 0.120 0.093 1874 322 163 0.505 26.3 C+138 ft
NB Approach 31.9 C
R+ T 22/2 0.317 0.421 3610 1522 1122 0.737 33.0 *C 995 ft
L 13/1 0.227 0.117 1873 395 303 0.766 27.9 C 230 ft
WB Approach 53.0 D
R 11/1 1603 558 177 0.317 36.2 D+192 ft
T 11/1 0.316 0.255 1879 479 421 0.880 64.8 E+550 ft
L 13/1 0.107 0.097 1882 316 211 0.668 43.4 D+233 ft
EB Approach 46.3 D
R 11/1 0.020 0.248 1594 582 150 0.258 33.6 C 162 ft
T 11/1 0.316 0.248 1883 466 329 0.705 53.9 *D 401 ft
L 13/1 0.107 0.090 1882 252 80 0.318 38.7 D+94 ft
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