The URL can be used to link to this page

Home My WebLink AboutPOUDRE RIVER BUSINESS PARK - MASTER PLAN - 79-88 - SUBMITTAL DOCUMENTS - ROUND 1 - TRAFFIC STUDYFisher P.U. D. Traffic Impact Study Krager ana P%ssociazes 1643 Boulder Street Denver. Colorado 80211 (303) 477-6318 FISHER PUD TRAFFIC IMPACT STUDY FORT COLLINS, COLORADO Prepared for: Architecture Plus 318 East Oak Street Fort Collins, Colorado 80524 Prepared by: Krager and Associates 1643 Boulder Street Denver, Colorado 80211 September, 1988 EXECUTIVE SUMMARY This traffic impact study addresses the capacity, geometric, and control requirements at a proposed development known as the Fisher PUD. This PUD calls for the ultimate development of 96,000 square feet of medical office development. The first phase of development will be a 12,000-square-foot medical office building. The project site is located northeast of the corner of Lemay Avenue and Riverside Avenue in Fort Collins, Colorado. The site is bounded to the north by the Cache La Poudre River. As a result of this analysis, the following is concluded: The completed Fisher PUD will generate approximately 5,242 vehicle trips per day. The PM peak hour will generate approximately 377 trips. Phase 1 of the PUD will generate 655 daily trips. The PM peak hour will generate approximately 48 vehicle trips. The addition of the Fisher PUD traffic will have only minor impacts on the level of service at the intersection of Riverside/Lemay. This intersection will operate at an acceptable level of service in the near term. By the Year 2010 this intersection will be at a congested level of service, with or without the Fisher PUD. Long delays will occur at the intersection of the site access and Lemay Avenue if this intersection remains unsignalized. These delays will occur on - site and should not affect traffic flow on Lemay Avenue. The existing left turn lane on Lemay Avenue to Hoffman Mill Road is adequate for the proposed development of this PUD. With proper traffic control and geometrics, the acci- dent rate should be acceptable for an urban area. 2 i L I. INTRODUCTION This traffic impact study addresses the capacity, geometric, and control requirements at a proposed development known as the Fisher PUD. This PUD calls for the ultimate development of phase square feet of development mwillabeoffice 12�,0001square-footThe medical phase of P office building. The project site is located northeast of the corner of Lemay Avenue and Riverside Avenue in Fort Collins, Colorado. The site is bounded to the north by the Cache La Poudre River (see Figure 1 ) . This study addresses the traffic impacts for the first phase of development at the expected opening (1989) and future impacts of full development (Year 2010). This study conforms to the format set forth in the Traffic Impact Study Guidelines. The study involved the following steps: - Collect physical, traffic and development data. - Perform trip generation, trip distribution and trip assignment. - Determine peak hour traffic volumes. - Conduct capacity and operational level of service analyses on key intersections. - Analyze signal warrants. - Analyze potential changes in accidents and safety considerations. 3 It 4 FORT COLLINS, COLORADO E. V D. i i [, .. w `\ • Lefton Cl _ �u ►� � C. Ll.e«, Il h, •L 1 :. •. r. wow..,. ,.. r Qllw ... t 6• 71 w r 11.01•tl st « r< « « \\ .�.,r,1.7/ r �.11. �t �� ... SITE r Lo.w, st. � MAINIW L,KwI st CI• O O sdu XAMPUS s 0•rIl•1 \� �r � ` I w ►IIIiw �, Dr Iw � [.� •11\:w 71 �' 1 `\ � = ' \ Ir = • ht • •1 7► CL•N fro r ti. C : '`• RI " _- . • \ via ` `.� • L 1 \ 'wt L. ,R f 11 .I A, ty16 �� fr. t oil _ L h c y.•r e I a M f r. •,,YI D•A.w•vt\ O= lr G. t Cl i Y I iO ,•co•— 1 1 aa 4G t ... L �i T f• N Q-. 1 VETERINARY i •.�n.,n - o TEACHING HOSPITAL _ f a.•„Q S `^ � Fin � r �� 111K• [. •I I I f ,•j � J C LAKL t ',�: FtIli• CI ,. - N I Figure 1 Site Location 4 II. TRANSPORTATION NETWORK Existing Network Both Riverside Avenue and Lemay Avenue are four -lane arterial streets with left turn lanes provided at intersections and access points. The intersection of Riverside Avenue and Lemay Avenue is a signalized intersection. Proposed Access Access to the site is provided from Hoffman Mill Road. The intersection of Hoffman Mill Road and Lemay Avenue is an unsig- nalized intersection. A short (approximately 60-foot long) left turn lane is provided on Lemay Avenue. This left turn lane cannot be extended without widening the bridge over the Cache La Poudre River. Future Traffic Network The City's Long Range Master Plan calls for a new roadway to extend through the Fisher property to Timberline Road. This roadway would replace the existing Hoffman Mill Road. The timing of this project is dependant on the timing of develop- ment for the land south of the Fisher PUD. To respond to this future change, the site plan allows for the existing use of Hoffman Mill Road, which can be replaced with the new roadway at the appropriate time. This site plan concept is shown in Figure 2. No improvements on Lemay Avenue or Riverside Avenue are assumed for this analysis. 5 t CD M c a� Q CU E Q N Cache La Poudre River PHASE 1 --- FISHER P.U.D. j� I� V Hoffman Mill Road C" 1 possible future access, eventually extended to Timberline Road - to remain temporarily - to be abandoned when new access to Timberline Road is completed Figure 2 Site Plan I I III. TRAFFIC VOLUME PROJECTIONS Background Traffic To analyze the impact of a development when it is completed, it is important to consider the increases in existing traffic which are likely to occur. Since the background traffic counts for this study were taken in 1986, a two percent annual in- crease in traffic was used to estimate 1989 traffic. Year 2010 traffic projections were developed from the City's Year 2000 traffic plan. A two percent annual increase in traffic was assumed for the period from Year 2000 to Year 2010. A ten percent peak hour factor was assumed. The background traffic is shown in Figure 3. Traffic Generation The proposed ultimate land use for the site will consist of 96,000 square feet of medical office buildings. The proposed first phase consists of 12,000 square feet of medical office building. Standard traffic generation characteristics compiled by the Institute of Transportation Engineers in their report entitled "Trip Generation", revised 1981, were applied to the proposed land use in order to estimate daily and peak hour vehicle trips. A vehicle trip is defined as a one-way vehicle movement from a point of origin to a point of destination. Table 1 illustrates the projected daily and PM peak hour traf- fic volumes generated by the Fisher PUD for Phase 1 and full development of the site. The estimated daily trip generation for full development of this project is 5,242 vehicle trips per day. The anticipated PM peak hourly volume is 377 vph. The Phase 1 development will generate 655 trips per day and 48 trips during the PM peak hour. TABLE 1 Trip Generation Daily Land Use Trips Phase 1 Medical Office 655 Full Development Medical Office 5,242 Based on ITE Land Use Code: 720 PM Peak Hour Trips In Trips Out Total 11 37 48 84 293 377 7 i I R��er s;ee Year 1989/Year 2010 ers;tee q pe T CD > T CO — 2/4 1 /2 Cz Cz T Cr J CV L CD CO CO CV ll:v T V CY)CY T C\j T o N 0 (0 CA ~ CQ 0) r r y •� r� 64 j y 833 S � 60 2� js� � r�r8� � Uo� � CV d' CO uO CV 0 0 �-- 60% > 40% Q a Cz J c0o f 0 0 CO SITE N I Figure 3 Background Traffic PM Peak Hour N SITE Figure 4 Trip Distribution PM Peak Hour Trip Distribution The directional distribution of the site -generated traffic indicates the general way in which access to and from the site is anticipated. The location of the project with respect to the rest of the City and the roadway network are primary fac- tors dictating the overall directional distribution. The anti- cipated directional distribution is shown in Figure 4. Traffic Assignment Traffic assignment is how the generated and distributed trips are expected to be loaded on the roadway network. Figure 4 shows the PM peak hour assignment of the site -generated traffic for the entire building. Figure 5 shows the PM peak hour as- signment of the site -generated traffic. Figure 6 shows the PM peak hour assignment of the site -generated and background traffic for both Years 1989 and 2010. 9 Year 1989/Year 2010 CO (D `r R-- 22/ 176 Q L t--- 15 / 1 17 E a) J o cfl C Cki 1�1 1-1 0) (9 r� SITE N N N Figure 5 CO Site -Generated Traffic PM Peak Hour T O N ~ �24/180 > 01 L 16/119 Q _ SITE CO E CO 0 CO ; ers� J N T CO aeCO 'q N N O r O ►� OIL O r2 1 T oil y 79 16 219 8 r�r (90 >> Year 1989/Year 2010 1 r U-)U) �N N Figure 6 CD N V) � Total Traffic PM Peak Hour I J Signal Warrants IV. ANALYSIS AND FINDINGS As a matter of policy, traffic signals are not installed at any location unless warrants are met according to the "Manual on Uniform Traffic Control Devices" However, it is possible to determine whether traffic signal warrants are likely to be met based upon estimated daily traffic and utilizing the chart shown in Appendix D. The intersection of Lemay Avenue and the site access may warrant a signal by the Year 2010. Since the projected traffic volumes are not significantly greater than the warrant volume, this report assumed the intersection would remain unsignalized. operational Analysis Capacity analysis was performed on the intersections of River- side/Lemay, and access/Lemay. The Critical Lane Analysis and Unsignalized Intersection Analysis techniques, as published in "Highway Capacity Manual, Special Report 209," by the Transpor- tation Research Board in 1985, were used. These techniques allow one to determine the overall intersection level of ser- vice based on each traffic movement. Table 2 illustrates the levels of service attained at the intersections for the 1989 and 2010 peak hour traffic projections, both with the proposed PUD and without any development on the site. B•TheThdefinitions for levels of service are given in Appendix e capacity worksheets are given in Appendix C. As can be seen from Table 2, the addition of traffic from the the Fisher PUD will not significantly impact the level of service at the Riverside/Lemay intersection. This intersection will operate acceptably in the near future, but will become a congested intersection as the background traffic increases in this area. A separate right turn lane for eastbound Riverside Avenue would provide a minor improvement at the intersection. The addition of two through lanes (one in each direction) on Lemay Avenue would bring the level of service to an acceptable ements are operatingbackgroundltraffic andsaremnotvrecommendednasded partoSe rve of the the the Fisher PUD development. For Phase 1 development, the unsignalized access intersections to the site will operate at acceptable levels of service except for left turns out of the site. This movement can expedelays on delays during the peak hours of traffic. However, Yg will occur on the site and should not interfere with traffic on either Lemay Avenue or Riverside Avenue. By the Year 2010 all movements at the access intersection will face some delay. The installation of a traffic signal at this location would provide a good level of service. However, a 11 i signal should not be installed unless traffic volume warrants are met and the new signal is part of an overall signal progression plan for Lemay Avenue. The left turn lane from Lemay Avenue to the site access is restricted to a length of 60-feet due to width of the Cache La Poudre bridge. Based on the Design of Left Turn Storage Volume Based Chart from the City of Lakewood Design Manual, a left urn storage of less than 25 feet is required to accommodate the 1989 traffic projections. By the Year 2010 a left turn storage 50 feet long will be needed. The existing left turn lane will be adequate for the proposed development of this PUD. Table 2 Intersection Capacity Analysis Summary Level 1989 Traffic Background Total of Service 2010 Traffic Background Total Riverside/Lemay B(962) C(968) F(1709) F(1753) with EB right turn lane E(1346) F(1399) with 6-lane Lemay C(1095) D(1133) Access/Lemay Left Turn from Lemay B B D E Right Turn from Access A A C E Left Turn from Access D D E F Accident Analysis Since this is a developed area of Fort Collins and the proposed development will generate only a minor addition in local traf- fic, a review of traffic accidents was not felt to be neces- sary. Summary The development of the Fisher PUD of Fort Collins will not have a significant impact on the roadway network in the vicinity of the site. No change in operating conditions on the local street system is predicted with the addition of site -generated traffic. 12