The URL can be used to link to this page

Home My WebLink AboutCARRIAGE HOUSE APARTMENTS - PDP - PDP120035 - SUBMITTAL DOCUMENTS - ROUND 1 - TRAFFIC STUDYDELICH Carriage House Apartments TIS, December 2012 ASSOCIATES Structure Plan. In areas termed “low density mixed use district,” acceptable operation at unsignalized intersections along arterial streets during the peak hours, is defined as level of service F, which is considered to be normal in an urban environment. The Shields/Springfield intersection operates acceptably during the morning and afternoon peak hours. The Shields/Springfield intersection calculated delay for the afternoon peak hour eastbound approach was commensurate with level of service F. Figure 3 shows the site plan for Carriage House Apartments. Carriage House Apartments will consist of 57 apartment units (97 beds). Carriage House Apartments will be marketed toward CSU students. Access to Carriage House Apartments will be via a driveway on Springfield Drive. Trip Generation, 9th Edition, ITE was used as the reference document in calculating the trip generation. Persons (beds) was used as the trip generation variable. Since this site is close to the Colorado State University campus, a reduction (25%) was taken for the apartment trips that are expected to walk or bike to and from this site. Table 2 shows the trip generation for Carriage House Apartments. This trip generation was discussed and agreed to in the scoping meeting. The trip generation for Carriage House Apartments is calculated at: 204 daily trip ends, 27 morning peak hour trip ends, and 31 afternoon peak hour trip ends. Using the cited reference document, the three single family homes generates: 28 daily trip ends, 2 morning peak hour trip ends, and 3 afternoon peak hour trip ends. It is expected that the proposed Carriage House Apartments will generate more traffic than the existing land use. One of the single family homes has direct access to Shields Street, a four-lane arterial street. The Shields Street access will be closed. Removing direct access to an arterial street is viewed as favorable from a traffic operations perspective. In addition to this, the number of driveways on Springfield Drive will be reduced to one and located approximately 400 feet from Shields Street. The trip distribution for this site is shown in Figure 4. The trip distribution was determined using the existing traffic counts, knowledge of the existing and planned street system, development trends, and engineering judgment. Figure 5 shows the site generated traffic assignment of Carriage House Apartments. Figure 6 shows the short range (2017) background peak hour traffic at the Shields/Springfield intersection. Background traffic volume forecasts for the short range (2017) future were obtained by reviewing traffic studies for other developments in this area and reviewing historic counts in the area. The counted traffic was increased at the rate of 1 percent per year. Table 3 shows the short range (2017) background peak hour operation at the Shields/Springfield intersection. Calculation forms are provided in Appendix D. The Shields/Springfield intersection will operate acceptably with the existing control and geometry. The Shields/Springfield intersection calculated delay for the afternoon peak hour eastbound approach was commensurate with level of service F. Level of service F is considered to be normal during the peak hours at stop sign controlled intersections along arterial streets. Figure 7 shows the short range (2017) total peak hour traffic at the Shields/Springfield intersection. Table 4 shows the short range (2017) total peak hour operation at the Shields/Springfield intersection. Calculation forms are provided in DELICH Carriage House Apartments TIS, December 2012 ASSOCIATES Appendix E. The Shields/Springfield intersection will operate acceptably during the peak hours. The Shields/Springfield intersection calculated delay for the afternoon peak hour eastbound approach was commensurate with level of service F. Level of service F is considered to be normal during the peak hours at stop sign controlled intersections along arterial streets. Figure 8 shows the short range (2017) geometry at the Shields/Springfield intersection. This is the existing geometry at the Shields/Springfield intersection. Traffic on Springfield Drive will increase slightly to the west of this site. However, it will be commensurate with that expected on a local street. The Carriage House Apartments 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 Carriage House Apartments. The Carriage House Apartments site is located within an area termed as “pedestrian district,” which sets the level of service threshold at LOS A for all measured categories except street crossing, which is B. There are four destination areas within 1320 feet of the proposed Carriage House Apartments: 1) the Colorado State University Campus area and residential area to the east of the site, 2) the residential neighborhood to the west of the site, 3) the residential neighborhood to the north of the site, and 4) the residential neighborhood to the south of the site. There are small commercial components in destination areas 1, 3, and 4. It is not likely that there would be much pedestrian affinity between the residents of Carriage House Apartments and the residential neighborhoods in the area. There are crosswalks at the Prospect/Shields and Elizabeth/Shields signalized intersections. There is a striped crosswalk, across Shields Street, at the Shields/Lake intersection. This crosswalk has a pedestrian signal. Currently, there are sidewalks adjacent to the site along Shields Street and Springfield Drive. Appendix F contains a Pedestrian LOS Worksheet. Acceptable pedestrian level of service will be achieved for all pedestrian destinations. Appendix F shows a map of the area that is within 1320 feet of Carriage House Apartments. Based upon Fort Collins bicycle LOS criteria, there are two bicycle destinations: Colorado State University Campus and Bennett Elementary School. The Bicycle LOS Worksheet is provided in Appendix F. This site connects directly to bike lanes on Shields Street, which achieves level of service B, as shown in Appendix F. Currently, this area is served by Transfort Route 3 and 19, which serve the CSU Transit Center. It is expected that transit level of service will be acceptable. It is concluded that, with development of Carriage House Apartments, the future level of service at the Shields/Springfield intersection will be acceptable. The recommended geometry is shown in Figure 8. The level of service for pedestrian, bicycle, and transit modes will be acceptable. SCALE: 1"=500' SITE LOCATION Figure 1 DELICH ASSOCIATES Carriage House Apartments TIS, December 2012 Springfield Bennett James Lake Prospect Elizabeth City Park Shields Springfield Drive AM/PM RECENT PEAK HOUR TRAFFIC Figure 2 DELICH ASSOCIATES Carriage House Apartments TIS, December 2012 Shields Street 4/24 1103/1278 7/12 760/1227 6/13 21/21 DELICH Carriage House Apartments TIS, December 2012 ASSOCIATES TABLE 1 Current Peak Hour Operation Intersection Movement Level of Service AM PM Shields/Springfield EB LT/RT C F (stop sign) SB LT A B TABLE 2 Carriage House Apartments Trip Generation Code Use Size AWDTE AM Peak Hour PM Peak Hour Rate Trips Rate In Rate Out Rate In Rate Out 220 Apartments 97 Beds Eq. 272 Eq. 7 Eq. 29 Eq. 26 Eq. 14 25% Reduction for Alternative Modes 68 2 7 6 3 Total 204 5 22 20 11 Springfield Drive TRIP DISTRIBUTION Figure 4 DELICH ASSOCIATES Carriage House Apartments TIS, December 2012 Shields Street SITE 10% 45% 45% Springfield Drive AM/PM SITE GENERATED PEAK HOUR TRAFFIC Figure 5 DELICH ASSOCIATES Carriage House Apartments TIS, December 2012 Shields Street 2/9 2/9 10/5 10/5 1/2 4/18 2/1 20/10 Site Access Springfield Drive AM/PM SHORT RANGE (2017) BACKGROUND PEAK HOUR TRAFFIC Figure 6 DELICH ASSOCIATES Carriage House Apartments TIS, December 2012 Shields Street 4/25 1159/1343 7/13 799/1290 6/14 22/22 DELICH Carriage House Apartments TIS, December 2012 ASSOCIATES TABLE 3 Short Range (2017) Background Peak Hour Operation Intersection Movement Level of Service AM PM Shields/Springfield WB LT/RT C F (stop sign) SB LT/T B B TABLE 4 Short Range (2017) Total Peak Hour Operation Intersection Movement Level of Service AM PM Shields/Springfield WB LT/RT D F (stop sign) SB LT/T B B Springfield/Site Access WB LT/T A A (stop sign) NB LT/RT A A Springfield Drive AM/PM SHORT RANGE (2017) TOTAL PEAK HOUR TRAFFIC Figure 7 DELICH ASSOCIATES Carriage House Apartments TIS, December 2012 Shields Street 6/34 1159/1343 9/22 799/1290 16/19 32/27 28/36 1/2 11/38 4/18 2/1 20/10 Site Access Springfield Drive SHORT RANGE (2017) GEOMETRY Figure 8 DELICH ASSOCIATES Carriage House Apartments TIS, December 2012 Shields Street Site Access - Denotes Lane