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Home My WebLink AboutFOX GROVE ODP - ODP130003 - REPORTS - TRAFFIC STUDYELB Engineering, LLC. Transportation Engineering Solutions Memorandum TO: Mr. Les Kaplan, Imago Enterprises Mr. Ward Stanford, Traffic Engineer FROM: Eric L. Bracke, P.E., P.T.O.E DATE: March 4, 2014 SUBJECT: Fox Grove; Overall Development Plan, TIS Memorandum This memorandum addresses the requirements of a transportation impact assessment for the Overall Development Plan of Fox Grove. The project is located in East Fort Collins, east of I-25 and south of Mulberry (SH 14). The project entails two phases of residential development. The first phase will be 66 units of single-family detached housing. The second phase will follow in a yet to be determined time frame of 49 single family units. A Preliminary Development Plan will be submitted shortly after the ODP and accompanied by an Intermediate Level Transportation Impact Study. The exact location of the project is displayed in Figure 1. The project is directly south of the Sun Flower Retirement Neighborhood and directly west of the Clydesdale Development. Short-term access to the site will be via Carriage Parkway. Long-term access will extend Carriage Parkway to the I-25 frontage road located a short distance west of the site. A scoping form was sent to the City Traffic Engineer to determine the scope of the transportation impact study. It was agreed that the project will have relatively minor (if any) impact to the surrounding street system and that a memorandum would be sufficient to address the related transportation impacts at the ODP level. Capacity analyses would not be required and a trip generation estimate would be required. The scoping form for the transportation study can be found in Appendix A. ELB Engineering, LLC 5401 Taylor Lane Fort Collins, CO 80528 Phone: 970-988-7551 ELBEngineering@lpbroadband.net 1 Site Figure 1: Location Map Existing Conditions The actual site is currently in agricultural use. Directly to the north of the site is the Sun Flower neighborhood and is advertised as an “active retirement community”. The Clydesdale neighborhood is to the northeast of the site, connecting via Carriage Parkway and is a single family detached housing neighborhood. Site - looking west Carriage Parkway is a collector roadway, approximately 50 feet in width with no striping (bike lanes, center stripe, etc…). The pavement is in good condition and has a posted speed limit of 30 mph. This roadway will be the principle access to the development until such time it is extended. ELB Engineering, LLC 5401 Taylor Lane Fort Collins, CO 80528 Phone: 970-988-7551 ELBEngineering@lpbroadband.net 2 Carriage Parkway looking northeast The Fort Collins Master Street Plan shows Carriage Parkway being extended to the south to make the connection to Prospect Road. Discussions regarding its future terminus also have been to extend the roadway to the west to connect to the I-25 frontage road. The intersection of Carriage Parkway and SH 14 is controlled with an 8-phase traffic signal maintained and operated by the Colorado Department of Transportation. The other potential access would be the use of Sun Chase Road through the Sun Flower Development. However, this is an issue that will need further discussion. Sun Chase is a 32-foot roadway that makes a fairly direct connection from Carriage Parkway to SH 14. However, Sun Flower is a gated community and Sun Chase appears to be a private roadway. At the time of the site visit, the gates were open and not monitored and driving through the neighborhood didn’t present an issue. The intersection of Sun Chase and SH 14 is a limited movement (RI/RO) controlled by a raised median. Future discussions on how to prevent cut-through traffic will more than likely need to take place. Sun Chase – look south The I-25 frontage road connects Prospect Road to State Highway 14. The roadway has a 26-foot cross section and a posted speed limit of 30 mph on the southern portion and a 45 mph speed limit on the northern portion. The pavement is in good condition. From active modes of transportation perspective, the area is not served or connected to any on-street bikes lanes or multi-use trails. The area is also not served by any transit system. Trip Generation Trip generation rates for the proposed project are based on the Trip Generation, 8th Edition manual prepared by the Institute of Transportation Engineers. The manual presents data from numerous trip generation studies for a variety of land uses from across the country. ITE Code 220, apartments and Code 210, single family, was used in this analysis. There were no trip reductions assumed since the area is not served by transit, bike facilities, or nearby major traffic generators. Table 1 below summarizes the proposed trip generation for the project. For the entire project, during the morning peak hour, 86 trip ends can be expected and 117 trip ends can be expected from the project during the afternoon peak hours. ELB Engineering, LLC 5401 Taylor Lane Fort Collins, CO 80528 Phone: 970-988-7551 ELBEngineering@lpbroadband.net 3 Table 1 – Trip Generation Estimates AM Rate AM Trips AM Rate AM Trips PM Rate PM Trips PM Rate PM Trips Use ITE CODE Size Daily Rate Daily TripsININOUT OUTININOUTOUT Project Phase I Single Family Residential 210 66.0 9.57 632 0.19 13 0.56 37 0.64 42 0.37 24 Phase II Single Family Residential 210 49.0 9.57 469 0.19 9 0.56 27 0.64 31 0.37 18 Total 1101 22 64 74 43 Trip Distribution Trip distribution is generally based on either a gravity model or engineering judgment. In this case, engineering judgment is all that is required. Since the project is located on the eastern boundary of the Fort Collins Urban Area, nearly all the trips produced by the project will be heading west. When the west moving traffic comes to I-25, the majority of traffic will either continue west on SH14 or divert to southbound I-25. When Carriage Parkway is extended, there will be a fairly even split of traffic heading west and south. Conclusion From a traffic engineering perspective, the Fox Gove development will not present any traffic related issues to the existing roadway network. There is sufficient capacity to handle the new traffic. The development is typical residential development surrounded by other residential development with roadway standards designed to accommodate high levels of service. An intermediate level TIS with capacity analysis of key intersections will be submitted with the PDP. Please let me know if you have any questions or if additional information is required. ELB Engineering, LLC 5401 Taylor Lane Fort Collins, CO 80528 Phone: 970-988-7551 ELBEngineering@lpbroadband.net 4 ELB Engineering, LLC 5401 Taylor Lane Fort Collins, CO 80528 Phone: 970-988-7551 ELBEngineering@lpbroadband.net 5 APPDENDIX Chapter 4 - Attachments Attachment A Transportation Impact Study Base Assumptions Future Traffic Growth Rate ---I 1 Project Information Project Name ::ti:.?K/;j20v6 0DP TIS Assumptions Study Area Boundaries Study Years East:&r/"I}"~ f}; .I.- Short Range: I;?C> I g, A West: I-;..s;:' [;_1.,. ~7<..P . ( Long Range: South: Type of Study Full: North: Hc-0 ~ I tf Study Intersections l . An access drives 5. 3. /.. :-/ I I i I V' ~ " ••.' - - - 7. 4. l 8. Trip Generation Rates Time Period for Study Trip Adjustment Factors Passby: I -- I Captive !--1p~ Market:-- Overall Trip Distribution <.-='/<- ''/ __ . ..sEEATTACHED SKETCH J ~L) ¥-i c:i~J Mode Split Assumptions Committed Roadway Improvements Other Traffic Studies Areas Requiring Special Study /'-'l em,;J eJ. s .f.-t..- s s ,'cn-'\ 6?:' p/'"o pe> oS,.J1 fY-P/ ~ <..-1- I PhAS(Nj 14/'eA- sf/'ee.l-s I =r 0e-J«/44 /-,frV'" A1~I""t../-'_ J.o ••~ ().L1Ar'4 .1S. --II I /-0 Date: r/ 2L1 /1 :..~ ,e=, . '£~-p-( r: Traffic Engjneer?fi __~-=- ---r----c/n---------------------- Local Entity Enginee ;k¥ 7)5' jU. Page 4-34 Larimer County Urban Area Street Standards - Repealed and Reenacted April 1. 2007 Adopted by Larimer County. City of Loveland, City of Fort Collins