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Home My WebLink AboutTOWNHOMES AT TIMBER CREEK PUD - PRELIMINARY - 16-89N - SUBMITTAL DOCUMENTS - ROUND 1 - TRAFFIC STUDYco MEMORANDUM co Ln O CO • o TO: Dave Brown, KEM Homes LO 6 Eric Bracke, Fort Collins Traffic Engineer a Fort Collins Planning Department CC cfl U� FROM: Matt Delich o DATE: January 18, 1999 z Li a SUBJECT: The Hamlet at Timberline traffic study ,i p (File: 9802ME02) J > O N The Hamlet at Timberline is a 68 dwelling unit multi -family Q (0 residential development, proposed to be located east of Timberline z T Road and north of Timber Creek Drive in Fort Collins. The Hamlet at aTimberline consists of a number of multi-plex buildings. Access is proposed to Timber Creek Drive approximately 200 feet east of L3 Timberline Road. This memorandum is an addendum to "South Timberline w o Properties Site Access Study," September, 1993. City staff requested CJ a a brief technical memorandum rather than a detailed transportation N impact study. N N In the cited site access study, this parcel was proposed to have 20 single family dwelling units. With the proposal considered in this memorandum, there will be a net increase of 207 daily trip ends, 15 morning peak hour trip ends, and 16 afternoon peak hour trip ends. The Hamlet at Timberline will not increase the traffic very significantly over that considered for the approved land use. The public street network in the area is being completed. Timberline Road is designated as an arterial street. Timber Creek Drive is designated as a two-lane collector street. Angelo Drive is considered to be a local street. Timberline Road is built from the Uj Battle Creek/Stetson Creek intersection north to Harmony Road. a Timber Creek Drive is built east of Timberline Road. It lines up z with Angelo Drive on the west side of Timberline Road. There is stop w sign control on both Timber Creek Drive and Angelo Drive. There is z a continuous sidewalk along the east side of Timberline Road to V z Harmony Road. There are gaps in the pedestrian facilities along JW Harmony Road. There are sidewalks along Timber Creek Drive. The W O existing sidewalks meet the design criteria of the city. The gaps F in the pedestrian system will be completed when the adjacent Q properties in the area are developed. Development proposals on the a adjacent properties to the north are currently under review by the z City. 5 a °C Figure 1 shows the peak hour traffic counts on Timberline Road W H just north of the Timberline/Timber Creek/Angelo intersection. Since c� this area is currently being developed, detailed intersection counts LL Ll- were deemed not to be relevant. Given the geometry at the �. Q Timberline/Timber Creek/Angelo intersection, this intersection operates acceptably. Acceptable operation is defined as level o service D or better. This area is not served by the Transfort Bus System. There are on -street bike lanes on both sides of Timberline Road. The wide shoulders along Harmony Road provide a safe environment for bicycles. Future bike lanes on Harmony Road are part of street designs associated with future development proposals to the north. These lanes are part of the existing Fort Collins bikeway system, providing both east/west and north/south connectivity throughout the city. Timber Creek Drive and Angelo Drive do not have striping. Both of these streets are wide enough to safely accommodate bicycles. When it is appropriate, bike lanes will be striped on Timber Creek Drive in accordance with Fort Collins standards. Trip generation for the Hamlet at Timberline is shown in Table 1. Trip ends were calculated using Trip Generation, 6th Edition, ITE. The calculated trip generation from the previous use is also shown on Table 1, along with the calculated difference. A simple comparison indicates that the proposed Hamlet at Timberline will generate slightly more peak hour trip ends than reflected in the "South Timberline Properties Site Access Study." It should be pointed out that the absolute difference in trip generation is very small. Figure 2 shows the short range peak hour traffic at the Timberline/Timber Creek/Angelo intersection. This forecast includes the existing traffic, traffic from the recently approved developments to the south (Willow Springs), continuing development east and west of Timberline Road, an increase in "other" traffic, and from the Hamlet at Timberline. This intersection will operate acceptably in the respective peak hours, as indicated in Table 2. Calculation forms are provided in Appendix A. Operation in the long range future will not be significantly different than that reflected in the cited traffic study. As mentioned earlier, Timber Creek Drive is a collector street. Based upon the new street standards, the cross section provides one travel lane in each direction and a 6 foot bike on each side. Between Timberline Road and the access to the Hamlet at Timberline, parking is not recommended. This site will connect directly to the bike lanes on Timber Creek Drive, which connect directly to the bike lanes on Timberline Road. There are no "priority destination areas," as defined in the "Multimodal Transportation Level of Service Manual," within 1320 feet of the site. A Bicycle LOS Worksheet is provided in Appendix B, which indicates that this site meets the base connectivity requirements. Sidewalks will be built within the site. They will connect to the existing sidewalks on Timber Creek Drive, providing pedestrian access to Timberline Road. It will also provide pedestrian access to the commercial uses that will be along Harmony Road. As the remainder of the Timber Creek residential area develops to the east, pedestrian facilities will be completed connecting to the system in the Wild Wood area. A Pedestrian LOS Worksheet is provided in Appendix B. This area falls into the location area termed "other" and "school walking area. It is within 5280 feet of Preston Junior High School. As noted on the Pedestrian LOS Worksheet, when the sidewalk system is completed to the east, this site will meet the guidelines for school access. There will be two future destination areas within 1320 feet of the Hamlet at Timberline. The pedestrian level of service to these areas will be acceptable. There are no other known destination areas that would interact with the proposed land use. In the future, Transfort will have feeder service on Timberline Road. These routes are defined as having 30+ minute service. The Timberline Road route will be within a quarter mile of the site. Pedestrian facilities will/do connect directly to Timberline Road. Harmony Road will be an enhanced travel corridor. The Hamlet at Timberline will meet the transit level of service guidelines. It is concluded that the "South Timberline Properties Site Access Study" addresses the traffic impacts with the proposed Hamlet at Timberline. The trip generation forecasted for this proposal is in line with that forecasted in the site access study. Operation at the key intersections will be acceptable. Transit, pedestrian, and bicycle level of service criteria will be met. RECENT PEAK HOUR TRAFFIC ON TIMBERLINE ROAD 410� N AM/PM Rounded to the Nearest 5 Vehicles. Figure 1 Land Use The Hamlet at Timberline 68 Townhome D.U. (Rate) Previous Use 20 Single Family D.U. (Rate) Difference Table 1 Trip Generation Daily A.M. Peak Trips Trips Trips In Out 398 (5.86) 191 (9.57) 207 Table 2 5 25 (0.07) (0.37) 4 11 (0.19) (0.56) 1 14 P.M. Peak Trips Trips In Out 24 12 (0.36) (0.18) 13 7 (0.65) (0.36) 11 5 Short Range Peak Hour Operation Level of Service Intersection AM ku Timberline/Timber Creek/Angelo (stop sign) EB LT/T C C E B RT A A WB LT/T C C WB RT A A NB LT A A SB LT A A Overall A A m C. ANGELO DRIVE 50/30 —� NOM. — 5/5 —� SHORT RANGE PEAK HOUR TRAFFIC —100/65 NOM. TIMBER CREEK 5/5 DRIVE '� t r Ln o Ln co \ LLn 0 Ln co n M AM/PM Rounded to the Nearest 5 Vehicles. Figure 2 APPENDIX A HCS: Unsignalized Intersections Release 2.1g TLTCAMSR.HCO Page 1 Center For Microcomputers In Transportation University of Florida 512 Weil Hall Gainesville, FL 32611-2083 Ph: (904) 392-0378 Streets: (N-S) timberline (E-W) timber creek/an elo Major Street Direction.... NS Length of Time Analyzed... 15 (min) Analyst ................... mjd Date of Analysis .......... 17/99 Other Information........ am pm short range Two-way Stop -controlled In section ---------------------------------- - Northbound Southbound Eastbound Westbound L T R L T R L T R L T R No. Lanes Stop/Yield Volumes PHF Grade MCI (0 SU/RV's ($) CVIs M PCEIs ------------ 1 2 < 0 N 5 390 5 .95 .95 .95 0 1.10 1 2 < 0 N 35 327 15 .95 .95 .95 0 1.10 --------------- 0 > 1 1 5 1 100 .95 .95 .95 0 1.10 1.10 1.10 ---------------- Adjustment Factors 0 > 1 1 50 1 5 .95 .95 .95 0 1.10 1.10 1.10 --------------- Vehicle Critical Follow-up Maneuver Gap (tg) Time (tf) ------------------------------------------------------------------ Left Turn Major Road 5.50 2.10 Right Turn Minor Road 5.50 2.60 Through Traffic Minor Road 6.50 3.30 Left Turn Minor Road 7.00 3.40 HCS: Unsignalized Intersections Release 2.1g TLTCAMSR.HCO Page 2 Worksheet for TWSC Intersection -------------------------------------------------------- Step 1: RT from Minor Street WB EB Conflicting Flows: (vph) 208 180 Potential Capacity: (pcph) 1086 1122 Movement Capacity: (pcph) 1086 1122 Prob. of Queue -Free State: 0.99 0.90 -------------------------------------------------------- Step 2: LT from Major Street SB NB -------------------------------------------------------- Conflicting Flows: (vph) 416 360 Potential Capacity: (pcph) 1025 1099 Movement Capacity: (pcph) 1025 1099 Prob. of Queue -Free State: 0.96 0.99 -------------------------------------------------------- Step 3: TH from Minor Street WB EB -------------------------------------------------------- Conflicting Flows: (vph) 816 810 Potential Capacity: (pcph) 363 366 Capacity Adjustment Factor due to Impeding Movements 0.95 0.95 Movement Capacity: (pcph) 347 349 Prob. of Queue -Free State: 1.00 1.00 -------------------------------------------------------- Step 4: LT from Minor Street WB EB -------------------------------------------------------- Conflicting Flows: (vph) 800 806 Potential Capacity: (pcph) 326 323 Major LT, Minor TH Impedance Factor: 0.95 0.95 Adjusted Impedance Factor: 0.96 0.96 Capacity Adjustment Factor due to Impeding Movements 0.86 0.96 Movement Capacity: (pcph) -------------------------------------------------------- 282 309 Intersection Performance Summary Avg. 95% Flow Move Shared Total Queue Approach Rate Cap Cap Delay Length LOS Delay Movement (pcph) (pcph) (pcph)(sec/veh) (veh) ------- ----- (sec/veh) ------ -------- EB L ------ 6 ------ 309 ------ > 314 ------- 11.7 0.0 C EB T 1 349 > 4.0 EB R 116 1122 3.6 0.3 A WB L 58 282 > 283 16.0 0.8 C WB T 1 347 > 14.9 WB R 6 1086 3.3 0.0 A NB L 6 1099 3.3 0.0 A 0.0 SB L 41 1025 3.7 0.0 A 0.3 Intersection Delay = 1.5 sec/veh HCS: Unsignalized Intersections Release 2.1g TLTCPMSR.HCO Page 1 Center For Microcomputers In Transportation University of Florida 512 Weil Hall Gainesville, FL 32611-2083 Ph: (904) 392-0378 --------------------------------------------------------------- Streets: (N-S) timberline (E-W) timber creek/angelo Major Street Direction.... NS Length of Time Analyzed... 15 (min) Analyst ................... mjd Date of Analysis.......... 1/17/99 Other Information ......... am pm short range Two-way Stop -controlled Intersection ---------------------------------------------------- Northbound Southbound Eastbound Westbound L T R L T R L T R L T R No. Lanes Stop/Yield Volumes PHF Grade MC' s ( a ) SU/RV's (o) CVIs (°s) PCEIs ------------ 1 2 < 0 N 5 288 5! .95 .95 .95 0 1.10 1 2 < 0 N 110 408 60 .95 .95 .95 0 1.10 ---------------- 0 > 1 1 5 1 65 .95 .95 .95 0 1.10 1.10 1.10 --------------- Adjustment Factors 0 > 1 1 30 1 5 .95 .95 .95 0 1.10 1.10 1.10 -------------- Vehicle Critical Follow-up Maneuver Gap (tg) Time (tf) ------------------------------------------------------------------ Left Turn Major Road 5.50 2.10 Right Turn Minor Road 5.50 2.60 Through Traffic Minor Road 6.50 3.30 Left Turn Minor Road 7.00 3.40 HCS: Unsignalized Intersections Release 2.1g TLTCPMSR.HCO Page 2 Worksheet for TWSC Intersection -------------------------------------------------------- Step 1: RT from Minor Street WB EB -------------------------------------------------------- Conflicting Flows: (vph) 154 246 Potential Capacity: (pcph) 1157 1039 Movement Capacity: (pcph) 1157 1039 Prob. of Queue -Free State: 0.99 0.93 -------------------------------------------------------- Step 2: LT from Major Street SB NB -------------------------------------------------------- Conflicting Flows: (vph) 308 492 Potential Capacity: (pcph) 1171 933 Movement Capacity: (pcph) 1171 933 Prob. of Queue -Free State: 0.89 0.99 -------------------------------------------------------- Step 3: TH from Minor Street WB EB -------------------------------------------------------- Conflicting Flows: (vph) 918 890 Potential Capacity: (pcph) 317 329 Capacity Adjustment Factor due to Impeding Movements 0.88 0.88 Movement Capacity: (pcph) 281 291 Prob. of Queue -Free State: 1.00 1.00 -------------------------------------------------------- Step 4: LT from Minor Street WB EB -------------------------------------------------------- Conflicting Flows: (vph) 856 886 Potential Capacity: (pcph) 300 287 Major LT, Minor TH Impedance Factor: 0.88 0.88 Adjusted Impedance Factor: 0.91 0.91 Capacity Adjustment Factor due to Impeding Movements 0.84 0.90 Movement Capacity: (pcph) -------------------------------------------------------- 253 260 Intersection Performance Summary Avg. 950 Flow Move Shared Total Queue Approach Rate Cap Cap Delay Length LOS Delay Movement (pcph) (pcph) (pcph)(sec/veh) (veh) ------- - - (sec/veh) -------- EB L ------ 6 ------ 260 ------ > 264 ------- 14.0 0.0 C EB T 1 291 > 4.6 EB R 75 1039 3.7 0.1 A WB L 35 253 > 254 16.5 0.5 C WB T 1 281 > 14.6 WB R 6 1157 3.1 0.0 A NB L 6 933 3.9 0.0 A 0.1 SB L 128 1171 3.5 0.3 A 0.7 Intersection Delay = 1.3 sec/veh APPENDIX B a Muitimodal Transportation Level- of Service Manual LOS Standards for Development Review - Bicycle Figure 7. Bicycle LOS Worksheet level of service - connectivity Fn;T-7 F7-7.1Fpo�d base connectivity: C C C specific connections to priority sites: description of applicable destination area within 1,320' including address I `i [21, I F4� destination area classification (see text) p. 20 0 City of Fort Collins Transportation Master Plan -Multimodal Transportation Level of Service Manual LOS Standards for Development Review - Pedestrian Figure 6. Pedestrian LOS Worksheet LkJr�c.Ki,iv� RSAroject location classification: ,gt> p (enter as many as apply) description of applicable destination area level of service (minintum based on project location classification) destination area within 1,320' classification ,i.u.1 including address (see text) lire.Ynsss uiiu,ury `trM' inaer-I& r.cvr,ry .Yosungs an tmauu+s 0 fig e-S-raw J 4 5 1AISST�Tv nt n8 actual A 11 N A !,VIA I N A proposed A A A C- a 14ARMOAJ VI LLAQE mcirrnun C.- G G C A/ * �;uTvxg� SAG actual N � N11 itJ A � proposed I A I �' A momtnan elC C C. C Z pA P,�p��T r 0AF1 C6, M601CAL actual NIA4i.4 i(!.4 1 OVA #1A (Fgv tua proposed A / / I7 A I I muiuunn �i actual proposed City of Fort Collins Transportation Master Plan