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Home My WebLink AboutTHE SLAB - PDP - PDP150016 - SUBMITTAL DOCUMENTS - ROUND 1 - TRAFFIC STUDYDELICH 808 West Prospect Road TIS, September 2015 ASSOCIATES Road/Prospect Lane intersection. The Prospect Road/Prospect Lane intersection currently meets the City of Fort Collins Motor Vehicle LOS Standards during the morning and afternoon peak hours with existing control and geometry. Calculation forms are provided in Appendix C. A description of level of service for unsignalized intersection from the 2010 Highway Capacity Manual is provided in Appendix C. Table 4-3 (revised per staff comments regarding type of intersection) showing the Fort Collins Motor Vehicle LOS Standards (Intersections) are also provided in Appendix C. The 808 West Prospect Road site is in an area termed “mixed use districts.” In areas termed “mixed use districts,” acceptable operation at unsignalized intersections, acceptable operation is considered to be at level of service F for any approach leg for an arterial/arterial, arterial/collector and arterial/local intersections. In such areas, it is expected that there would be substantial delays to the minor street movements at unsignalized intersections during the peak hours. This is considered to be normal in urban areas. At unsignalized collector/local intersections, acceptable operation is considered to be at level of service C for any approach leg. Figure 4 shows the site plan for the development at 808 West Prospect Road. The development at 808 West Prospect Road is a 70 bed apartment complex. Currently the site is vacant (foundation slab). Access to the site will be via a right- in/right-out access to/from Prospect Road. There will be emergency access to Lake Street that will, also, serve pedestrians and bicyclists. Trip generation is important in considering the impact of a development such as this upon the existing and proposed street system. A compilation of trip generation information contain in Trip Generation, 9th Edition, ITE is customarily used to estimate the trips that would be generated by the proposed/expected uses at a site. However, the City of Fort Collins has performed a trip generation study for apartments in Fort Collins. Therefore, the trip generation rates calculated by the City will be used. A person/bed was used as the trip generation variable. A trip is defined as a one-way vehicle movement from origin to destination. Table 2 shows the expected trip generation on a daily and peak hour basis. The trip generation of the 808 West Prospect Road development resulted in 186 daily trip ends; 14 morning peak hour trip ends; and 30 afternoon peak hour trip ends. Directional distribution of the generated trips was determined for 808 West Prospect Road site and is shown in Figure 5. Figure 6 shows the site generated peak hour traffic assignment of 808 West Prospect Road. Figure 7 shows the short range (2020) background morning and afternoon peak hour traffic at the Prospect Road/Prospect Lane intersection. Background traffic volume forecasts for the short range (2020) future were obtained by reviewing traffic studies for other developments in this area and reviewing historic counts in the area. Traffic volumes at the Prospect Road/Prospect Lane intersection were increased at a rate of 2.0 percent per year. Table 3 shows the short range (2020) background morning and afternoon peak hour operation at the Prospect Road/Prospect Lane intersection. Calculation forms are provided in Appendix D. The Prospect Road/Prospect Lane intersection will meet the City of Fort Collins Motor Vehicle LOS Standards during the morning and afternoon peak hours with the existing control and geometry in the short range (2020) future. DELICH 808 West Prospect Road TIS, September 2015 ASSOCIATES Figure 8 shows the short range (2020) total morning and afternoon peak hour traffic at the Prospect Road/Prospect Lane and Prospect Road/Site Access intersections. Table 4 shows the short range (2020) total morning and afternoon peak hour operation at the key intersections. Calculation forms are provided in Appendix E. The Prospect Road/Prospect Lane and Prospect Road/Site Access intersection will meet the City of Fort Collins Motor Vehicle LOS Standards during the morning and afternoon peak hours with the existing control and geometry. The recommended short range (2020) geometry is shown in Figure 9. The right- in/right-out access should be designed to discourage other traffic movements. This is the existing geometry. A westbound right-turn lane is not required based on Figure 8-4 in LCUASS. According to Figure 8-1 in LCUASS, left-turn lanes are required on all arterial streets. This segment of Prospect Road is constrained and does not have a left- turn lane. This is addressed by the City of Fort Collins in the “West Central Area Plan” (adopted March 17, 2015). The 808 West Prospect Road site is in an area within which the City requires pedestrian and bicycle level of service evaluations. Appendix F shows a map of the area that is within 1320 feet of the 808 West Prospect Road site. The 808 West Prospect Road site is located within an area termed as “pedestrian district,” which sets the pedestrian level of service threshold at LOS A for all measured categories, except for Street Crossing at LOS B. There are three destination areas within 1320 feet of the proposed development at 808 West Prospect Road: 1) the residential area to the west, 2) the residential area to the south, and 3) Colorado State University to the north. The primary pedestrian destination is CSU. There is not likely to be a significant pedestrian affinity between this site and the other residential areas shown. Pedestrians will have direct access to Lake Street via the emergency access. The adopted plan for this corridor shows a multi-use path on the north side of Prospect Road. It is assumed that this multi-use path will be implemented. Practically speaking, the only significant pedestrian destination is CSU. For that reason, it is suggested that CSU be the only pedestrian destination considered in this evaluation. With the availability of the emergency access to Lake Street, the pedestrian level of service will be met for CSU. This development will build the 10 foot multi-use path along the site frontage. Appendix F contains a Pedestrian LOS Worksheet. Based upon Fort Collins Bicycle LOS criteria, there is one destination area within 1320 feet of the 808 West Prospect Road site: Colorado State University to the north. Appendix F contains a Bicycle LOS Worksheet. Bicyclists will have access to Lake Street via the emergency access. Lake Street has on street bike lanes. With the multi- use path and direct access to Lake Street, the bicycle level of service will be met. Currently, this area is not served by Transfort. The nearest bus stop is at the Prospect Road/Shields Street intersection. It is concluded that, with development of the 808 West Prospect Road, the future level of service at the key intersections will be acceptable. The Prospect/Site Access intersection should be designed as a right-in/right-out access. Spring Creek Trail SCALE: 1"=500' SITE LOCATION Figure 1 DELICH ASSOCIATES 808 West Prospect Road TIS, September 2015 808 West Prospect Road Lake Street Prospect Road Prospect Lane Shields Street Whitcomb Street Sheeley Street CURRENT GEOMETRY Figure 2 DELICH ASSOCIATES 808 West Prospect Road TIS, September 2015 Prospect Lane Prospect Road - Denotes Lane RECENT PEAK HOUR TRAFFIC Figure 3 DELICH ASSOCIATES 808 West Prospect Road TIS, September 2015 Prospect Lane Prospect Road AM/PM 478/1138 0/3 970/753 4/7 4/4 5/1 DELICH 808 West Prospect Road TIS, September 2015 ASSOCIATES TABLE 1 Current Peak Hour Operation Intersection Movement Level of Service AM PM Prospect Road/Prospect Lane (stop sign) EB LT/T A A NB LT/RT C E TABLE 2 Trip Generation Code Use Size AWDTE AM Peak Hour PM Peak Hour Rate Trips Rate In Rate Out Rate In Rate Out 220 Apartment 70 Beds/Persons 2.65 186 0.04 3 0.15 11 0.27 19 0.15 11 SITE PLAN Figure 4 DELICH ASSOCIATES 808 West Prospect Road TIS, September 2015 AM/PM Spring Creek Trail SCALE: 1"=500' TRIP DISTRIBUTION Figure 5 DELICH ASSOCIATES 808 West Prospect Road TIS, September 2015 808 West Prospect Road Lake Street Prospect Road Prospect Lane Shields Street Whitcomb Street Sheeley Street 5% 55% 25% 15% SITE GENERATED PEAK HOUR TRAFFIC Figure 6 DELICH ASSOCIATES 808 West Prospect Road TIS, September 2015 Prospect Lane Prospect Road AM/PM 3/19 11/11 3/19 Site Access SHORT RANGE (2020) BACKGROUND PEAK HOUR TRAFFIC Figure 7 DELICH ASSOCIATES 808 West Prospect Road TIS, September 2015 Prospect Lane Prospect Road AM/PM 528/1256 0/3 1071/831 4/7 4/4 5/1 DELICH 808 West Prospect Road TIS, September 2015 ASSOCIATES TABLE 3 Short Range (2020) Background Peak Hour Operation Intersection Movement Level of Service AM PM Prospect Road/Prospect Lane (stop sign) EB LT/T A A NB LT/RT D E TABLE 4 Short Range (2020) Total Peak Hour Operation Intersection Movement Level of Service AM PM Prospect Road/Prospect Lane (stop sign) EB LT/T A B NB LT/RT D E Prospect Road/Site Access (stop sign) SB RT B C SHORT RANGE (2020) TOTAL PEAK HOUR TRAFFIC Figure 8 DELICH ASSOCIATES 808 West Prospect Road TIS, September 2015 Prospect Lane Prospect Road AM/PM 531/1275 0/3 1071/831 4/7 4/4 5/1 11/11 3/19 532/1260 Site Access 1075/838 4