HomeMy WebLinkAboutFORTY THREE PRIME - PDP - PDP180014 - 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 LLC shall be without liability to Kellar Engineering LLC.
43 Prime Multi-Family
6608 Autumn Ridge Drive, Fort Collins, CO
Traffic Compliance Memorandum
KE Job #2018-059
Prepared for:
Red Raven LLC
201 Commerce Dr. #1
Fort Collins, CO 80524
Prepared by:
www.kellarengineering.com
970.219.1602 phone
September 25, 2018
Sean K. Kellar, PE, PTOE
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1.0 Introduction
This Traffic Compliance Memorandum (Traffic Memo) is for the proposed 43 Prime
Multi-Family project located at the southeast quadrant of E. Trilby Road and Autumn
Ridge Drive in Fort Collins, CO. See Figure 1: Vicinity Map.
Kellar Engineering LLC (KE) has prepared the Traffic Memo to document the results of
the project’s anticipated traffic generation compared to the original traffic study for the
subdivision. The proposed 43 Prime Multi-Family project is anticipated to generate
approximately 472 daily weekday trips, 53 AM total peak hour trips, and 36 PM total
peak hour trips.
2.0 Existing Conditions and Roadway Network
The project site is located at the southeast quadrant of E. Trilby Road and Autumn Ridge
Drive in Fort Collins, CO. Trilby Road is an existing east/west arterial street adjacent to
the north boundary of the project site. Trilby Road has one eastbound thru lane, one
westbound thru lane, auxiliary lanes (left-turn deceleration lanes and right-turn
deceleration lanes), bike lanes, detached sidewalks, and a posted speed of 40 mph
adjacent to the project site. Autumn Ridge Drive is an existing north/south collector
street adjacent to the west boundary of the project site. Autumn Ridge Drive has one
northbound thru lane, one southbound thru lane, left-turn deceleration lanes, bike lanes,
detached sidewalks, and a posted speed of 25 mph adjacent to the project site. Access
to the project site is proposed from the previously planned access point locations to
Autumn Ridge Drive and Candlewood Drive. See Figure 2: Site Plan.
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Figure 1: Vicinity Map
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Figure 2: Site Plan
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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
230 Multi-Family 43 DU 5.81 250 0.44 17% 3 83% 16 19 0.52 67% 15 33% 7 22
826 Commercial 5 KSF 44.32 222 6.84 48% 16 52% 18 34 2.71 44% 6 56% 8 14
Total 472 19 34 53 21 15 36
KSF = Thousand Square Feet
DU = Dwelling Units
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3.0 Proposed Development
The proposed development consists of approximately 43 multi-family units and 5,000 SF
of commercial. See Table 1: Trip Generation and Figure 2: Site Plan.
4.0 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 proposed project is anticipated to generate
approximately 472 daily weekday trips, 53 AM peak hour trips, and 36 PM peak hour
trips. Table 1 summarizes the estimated trip generation for the proposed development.
5.0 Comparing Trip Generation
The original traffic report for the subdivision, Provincetowne III Traffic Impact Analysis,
was prepared by Leigh, Scott, & Cleary (LSC) on January 31, 2006. Table 1 in the
original traffic report (See Appendix), shows the original estimated trip generation for the
subdivision as: 5,104 average weekday trips, 184 AM in peak hour trips, 286 AM out
peak hour trips, 319 PM in peak hour trips, and 265 PM out peak hour trips. Reviewing
Table 1, Estimated Traffic Generation in the original traffic report, the original assumed
land uses for the subdivision were: Single Family (296 dwelling units), Multi-Family (102
dwelling units), Day-care Center (12,000 SF), and Medical Office building (20,000 SF).
From reviewing aerial photos, it appears that the single family portion of the
development has been constructed but the multi-family and commercial uses have not
developed. Based upon this, the remaining trip generation of the multi-family and
commercial uses from the original traffic report calculates to approximately 2,272 daily
weekday trips, 247 AM total peak hour trips, and 285 PM total peak hour trips.
Therefore, the trip generation of the proposed project is less than the trip generation
assumed for the original Provincetown development.
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6.0 Conclusions
This Traffic Compliance Memorandum (Traffic Memo) for the proposed 43 Prime Multi-Family
project verifies that the project’s trip generation is less than what was assumed in the original
traffic report for the subdivision.
The findings of the Traffic Memo are summarized below:
• The proposed project is anticipated to generate approximately 472 daily weekday trips,
53 AM peak hour trips, and 36 PM peak hour trips.
• The trip generation of the project does not result in an increase compared to the trip
generation in the original traffic report for the subdivision, Provincetowne III Traffic
Impact Analysis, prepared by Leigh, Scott, & Cleary (LSC) on January 31, 2006.
• The existing roadway network is sufficient to handle the project’s proposed traffic and
the findings in the original traffic report for the subdivision are still valid.
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APPENDIX:
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Aerial Image (Google Maps)
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