HomeMy WebLinkAboutVILLAGE COOPERATIVE FORT COLLINS - PDP - PDP160036 - SUBMITTAL DOCUMENTS - ROUND 1 - TRAFFIC STUDYThis document, together with the concepts and recommendations presented herein, as an instrument of service, is intended only for the
specific purpose and client for which it was prepared. Reuse of and improper reliance on this document without written authorization from
Kellar Engineering shall be without liability to Kellar Engineering.
Village Cooperative, Fort Collins
Traffic Impact Study Memorandum
KE Job #2016-021
Prepared For:
Real Estate Equities Architecture, LLC
1400 Corporate Center Curve, Suite 100
Eagan, MN 55121
Prepared By:
www.kellarengineering.com
970.219.1602 phone
August 4, 2016
Sean K. Kellar, PE, PTOE
Village Cooperative Fort Collins TIS Memorandum Page 1
TABLE OF CONTENTS
Page
1.0 Introduction 3
2.0 Existing Conditions and Roadway Network 3
3.0 Pedestrian/Bicycle Facilities 7
4.0 Proposed Development 7
4.1 Trip Generation 8
4.2 Trip Distribution 8
4.3 Traffic Assignment 8
4.4 Short Range Total Peak Hour Traffic 8
5.0 Traffic Operation Analysis 9
5.1 Analysis Methodology 9
5.2 Intersection Operational Analysis 9
6.0 Conclusions 17
List of Figures: Page
Figure 1: Vicinity Map 5
Figure 2: Site Plan 6
Figure 3: Recent Peak Hour Traffic 11
Figure 4: Trip Distribution 12
Figure 5: Site Generated Peak Hour Traffic 13
Figure 6: 2018 Short Range Background Peak Hour Traffic 14
Figure 7: 2018 Short Range Total Peak Hour Traffic 15
Village Cooperative Fort Collins TIS Memorandum Page 2
TABLE OF CONTENTS (continued)
List of Tables:
Table 1: Trip Generation 10
Table 2: Short Range Total Peak Hour Operation 16
Appendices:
Appendix A: Traffic Counts 19
Appendix B: Base Assumptions (TIS Scoping Form) 20
Appendix C: Level of Service (LOS) Tables 23
Appendix D: Aerial Image 24
Appendix E: HCM Calculations (Synchro) 25
Village Cooperative Fort Collins TIS Memorandum Page 3
1.0 Introduction
This Traffic Impact Study Memorandum (TIS Memo) is for the proposed Village
Cooperative senior adult housing project located at the northeast quadrant of the
intersection of Horsetooth Road and Stanford Road in Fort Collins, CO. See Figure 1:
Vicinity Map. The purpose of this TIS Memo is to identify project traffic generation
characteristics, to identify potential traffic related impacts on the adjacent street system,
and to develop mitigation measures required for identified traffic impacts.
Kellar Engineering LLC (KE) has prepared the TIS Memo to document the results of
anticipated traffic conditions in accordance with the Larimer County Urban Area Street
Standards (LCUASS). The proposed development is anticipated to generate
approximately 179 daily weekday trips, 11 AM peak hour trips, and 13 PM peak hour
trips. See Table 1: Trip Generation.
2.0 Existing Conditions and Roadway Network
The project site is located at the northeast quadrant of the intersection of Horsetooth
Road and Stanford Road in Fort Collins, CO. The adjacent land uses are mix of multi-
family and office. Horsetooth Road is an east/west street that is adjacent to the south
side of the project site. Horsetooth Road is classified as a 4-lane Arterial on the City of
Fort Collins Master Street Plan. Horsetooth Road has a posted of speed of 35 mph
adjacent to the project site and has 12’ wide thru lanes with sidewalks on both sides.
Additionally, per email correspondence with the City, a westbound right-turn lane will be
constructed at the intersection of Horsetooth Road and Stanford Road by others in the
short range future. Sidewalk and bike lane does not exist along Horsetooth Road
adjacent to the project site. The project’s frontage improvements will be responsible for
constructing the ultimate bike lane and sidewalk adjacent to the property frontage along
Horsetooth Road.
Stanford Road is an existing north/south street that is adjacent to the west side of the
project site. Stanford Road is classified as a 2-lane Collector on the City of Fort Collins
Master Street Plan. Stanford Road has a posted speed of 25 mph adjacent to the
project site with bike lane adjacent to the project site. Sidewalk does not exist along
Village Cooperative Fort Collins TIS Memorandum Page 4
Stanford adjacent to the project site. The project’s frontage improvements will be
responsible for constructing this ultimate sidewalk adjacent to the property along
Stanford Road.
Village Cooperative Fort Collins TIS Memorandum Page 5
Figure 1: Vicinity Map
Project Site
Village Cooperative Fort Collins TIS Memorandum Page 6
Figure 2: Site Plan
Village Cooperative Fort Collins TIS Memorandum Page 7
3.0 Pedestrian/Bicycle Facilities
The proposed project will be responsible for design and construction of the ultimate curb,
gutter, and sidewalk along Horsetooth Road and Stanford Road adjacent to the property.
These frontage improvements will tie into the existing bike lane and sidewalk system
along Horsetooth Road and Stanford Road. Additionally in order to provide pedestrian
connectivity, approximately 100’ of offsite sidewalk should be constructed along the east
side of Stanford Road north of the project site. This will provide for a continuous
sidewalk system along the east side of Stanford Road.
4.0 Proposed Development
The Village Cooperative consists of 52 dwelling units (DU) of Senior Adult Housing (ITE
Code 252).
Village Cooperative Fort Collins TIS Memorandum Page 8
4.1 Trip Generation
Site generated traffic estimates are determined through a process known as trip
generation. Rates and equations are applied to the proposed land use to estimate traffic
generated by the development during a specific time interval. The acknowledged source
for trip generation rates is the Trip Generation Report published by the Institute of
Transportation Engineers (ITE). ITE has established trip generation rates in nationwide
studies of similar land uses. For this study, KE used the ITE 9th Edition Trip Generation
Report average trip rates. The Village Cooperative is anticipated to generate
approximately 179 daily weekday trips, 11 AM peak hour trips, and 13 PM peak hour
trips. Table 1 summarizes the estimated trip generation for the proposed development.
4.2 Trip Distribution
Distribution of site traffic on the street system was based on the area street system
characteristics, existing traffic patterns and volumes, anticipated surrounding
development areas, and the proposed access system for the project. The directional
distribution of traffic is a means to quantify the percentage of site generated traffic that
approaches the site from a given direction and departs the site back to the original
source. Figure 4 illustrates the trip distribution used for the project’s analysis.
4.3 Traffic Assignment
Traffic assignment was obtained by applying the trip distributions to the estimated trip
generation of the development. Figure 5 shows the site generated peak hour traffic
assignment.
4.4 Short Range Total Peak Hour Traffic
Site generated peak hour traffic volumes were added to the background traffic volumes
to represent the estimated traffic conditions for the short range 2018 horizon. These
background (2018) and short range (2018) total traffic volumes are shown in Figure 6
and Figure 7 respectively.
Village Cooperative Fort Collins TIS Memorandum Page 9
5.0 Traffic Operation Analysis
KE’s analysis of traffic operations in the site vicinity was conducted to determine the
capacity at the identified intersections. The acknowledged source for determining
overall capacity is the 2010 Edition of the Highway Capacity Manual.
5.1 Analysis Methodology
Capacity analysis results are listed in terms of level of service (LOS). LOS is a
qualitative term describing operating conditions a driver will experience while traveling
on a particular street or highway during a specific time interval. LOS ranges from an A
(very little delay) to an F (long delays). A description of the level of service (LOS) for
signalized and unsignalized intersections from the 2010 Highway Capacity Manual and
LCUASS Table 4-3 showing the City of Fort Collins Motor Vehicle LOS Standards
(Intersections) are also provided in Appendix C.
5.2 Intersection Operational Analysis
Operational analysis was performed for the short range 2018 horizon. The calculations
for this analysis are provided in Appendix D. Using the short range total traffic volumes
shown in Figure 7, and the proposed lane geometry and intersection control; the project
is projected to operate acceptably and meet the LOS requirements for the City of Fort
Collins. See Table 2: 2018 Short Range Total Peak Hour LOS Operation.
Village Cooperative Fort Collins TIS Memorandum Page 10
Table 1: Trip Generation (ITE Trip Generation, 9th Edition)
ITE
Code Land Use Average Daily Trips AM Peak Hour Trips PM Peak Hour Trips
Size Rate Total Rate % In In % Out Out Total Rate % In In % Out Out Total
252 Senior Adult Housing 52 DU 3.44 179 0.2 34% 4 66% 7 11 0.25 54% 7 46% 6 13
Total 179 4 7 11 7 6 13
DU = Dwelling Units
Village Cooperative Fort Collins TIS Memorandum Page 11
Figure 3: Recent Traffic
Village Cooperative Fort Collins TIS Memorandum Page 12
Figure 4: Trip Distribution
Village Cooperative Fort Collins TIS Memorandum Page 13
Figure 5: Site Generated Peak Hour Traffic
Village Cooperative Fort Collins TIS Memorandum Page 14
Figure 6: 2018 Short Range Background Peak Hour Traffic
Village Cooperative Fort Collins TIS Memorandum Page 15
Figure 7: 2018 Short Range Total Peak Hour Traffic
Village Cooperative Fort Collins TIS Memorandum Page 16
Table 2: 2018 Short Range Total Peak Hour Operation
Movement
Level of Service (LOS)
Intersection AM PM
LOS LOS
Stanford Rd/Site Access WB Left/Right A A
WB Approach A A
NB Thru/Right A A
NB Approach A A
SB Thru/Left A A
SB Approach A A
Overall A A
Village Cooperative Fort Collins TIS Memorandum Page 17
6.0 Conclusions
This Traffic Impact Study Memorandum for the proposed Village Cooperative project
verifies that the project will be able to meet the City of Fort Collins Standards for traffic at
the time of development.
The findings of the TIS Memo are summarized below:
1. The Village Cooperative project has demonstrated compliance with Chapter 4 of
the Larimer County Urban Area Street Standards (LCUASS).
2. The Village Cooperative project is anticipated to generate approximately 179
daily weekday trips, 11 AM peak hour trips, and 13 PM peak hour trips.
3. The proposed site access to Stanford Road will operate acceptably during the
AM and PM peak hours using the 2018 Short Range Total traffic.
4. The project will be responsible for design and construction of the ultimate curb,
gutter, and sidewalk along Horsetooth Road and Stanford Road adjacent to the
property.
5. In order to provide pedestrian connectivity, approximately 100’ of offsite sidewalk
should be constructed along the east side of Stanford Road north of the project
site. This will provide for a continuous sidewalk system along the east side of
Stanford Road.
Village Cooperative Fort Collins TIS Memorandum Page 18
APPENDICES:
Village Cooperative Fort Collins TIS Memorandum Page 19
Appendix A: Traffic Counts
Village Cooperative Fort Collins TIS Memorandum Page 20
Appendix B: Base Assumptions (Page 1 of 3)
Village Cooperative Fort Collins TIS Memorandum Page 21
Base Assumptions (Page 2 of 3)
Village Cooperative Fort Collins TIS Memorandum Page 22
Base Assumptions (Page 3 of 3)
Village Cooperative Fort Collins TIS Memorandum Page 23
Appendix C: Level of Service (LOS) Tables
Level of Service Definitions
Level of Service Signalized Intersection Unsignalized Intersection
(LOS) Average Total Delay Average Total Delay
(sec/veh) (sec/veh)
A ≤ 10 ≤ 10
B > 10 and ≤ 20 > 10 and ≤ 15
C > 20 and ≤ 35 > 15 and ≤ 25
D > 35 and ≤ 55 > 25 and ≤ 35
E > 55 and ≤ 80 > 35 and ≤ 50
F > 80 > 50
LCUASS Table 4-3
Village Cooperative Fort Collins TIS Memorandum Page 24
Appendix D: Aerial Image (Google Earth)
Village Cooperative Fort Collins TIS Memorandum Page 25
Appendix E: HCM Calculations (Synchro)
Village Cooperative Fort Collins TIS Memorandum Page 26