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HomeMy WebLinkAboutPLANTATION MANOR - PDP - 39-00 - SUBMITTAL DOCUMENTS - ROUND 1 - TRAFFIC STUDYr M 1111111011 M. O M M i M � tltlll�tt i iw■I. Attachment "B" PEDESTRIAN ANALYSIS WORKSHEET „ . Pedestrian Destinations (within''/, tulle of project Bite).. Origin Rec. Res.. Inst., ,Ofc/Bus. Com. Ind. Other (Project Site) (Specify) n Recreation Residential,` Institution (school, church, civic) Office/ Business Commercial Industrial Other (Specify) Based upon the project's land use classification, the pedestrian Level of Service analysis for directness, continuity, street crossings, visual Interest/amenity, and security should consider the applicable destinations which are located within one quarter mile of the project site. DATE: 9 5 a o TRAFFIC ENGINEER: Attachment "A" Transportation Impact Study Base Assumptions cd -Exr� t Study Area Boundaries ,. s` North: South: East: West: Study Years Future Traffic Growth Rate Z�Io Study Intersections 1. All access drives 2. 3. 4. 5. 6. 7. 8. Time Period for Study AM PM — Sat Noon Trip Generation Rates ra.J- Trip Adjustment Factors Passby: Captive . Market: Overall Trip Distribudoryry � (�� T�e-�wt.. North South East West - Mode Split Assumptions o,1c Committed Roadway Improvements II Other Traffic Studies Areas Requiring Special Study yn fo �➢ -M Date: '`3'CO Traffic Engineer: ��J 71 u X. CONCLUSIONS Based upon the documented analyses and investigations, the following can be con- cluded: • Current roadway operations in the area of Plantation Manor are acceptable during all peak hour periods. d• Plantation Manor will generate 17 morning peak hour trips, 21 afternoon peak hour trips, and 223 trips per day. These trips are considered minor. iThe impacts of site generated traffic are negligible. This is evidenced by the finding that overall intersection levels of service remain constant whether or not Plantation Manor is developed. • Per City criteria, traffic operations will be acceptable with the proposed de- velopment fully builtout. • Plantation Manor will enhance the pedestrian environment. It will result in new sidewalk along Horsetooth Road adjacent to the site. Pedestrian lev- i, els: of service will meet or exceed City criteria. ...Current and future bicycle levels of service will exceed those required by -` j _City -standards. This site has direct access to both north -south -and east= west on street bicycle lanes. • Future transit operations are expected to achieve level of service 'B' condi- tions. This level of service exceeds City standards. Plantation Manor will not adversely affect the neighboring local street sys- tem. It will, in fact, provide an efficient connection to Horsetooth Road re- sulting in a net decrease in vehicles using the local streets. In summary, the transportation demands associated with Plantation Manor are con- sidered negligible. They can be easily absorbed and accommodated by the current transportation system. 25 N �P .. Table 3: Future Transit Level of Service Travel Time Factor Worksheet Destination Approximate Distance Auto Travel Time Bus Travel Time Travel Time Factor Fort Collins Hi hSchool 3 3/4 miles 16 37 min. Foothills Fashion Mall 2 miles 11 5 min. CSU Transit Center 1 3/4 miles 10 20 min. Downtown 4 1/2 miles 19 47 min. Total Travel Time 56 1 109 min. 1.95 Service Level Standards Worksheet Standard Mixed Use Centers and Commercial Corridors Remainder of the Service Area Meets Standard Fails Standard Score Hours of Weekday Service 18 Hours 16 Hours X Weekday Frequency of Servic 15 Minutes 20 Minutes X Travel Time Factor 2.0 X 2.0 X X Peak Load Factor <= 1.2 <= 1.2 X J OT4 LOS 'B' C. Levels of Service Using the criteria presented in the Manual, current and future transit levels of service were determined. Current.travel time factors were calculated for both transit and automobile trips to Fort Collins High School, Foothills Fashion Mall, the CSU Transit Center, and the down- town area as defined in the Manual. Bus travel times and transfer times were ex- tracted from the current Transfort bus schedule brochure. A 5 minute walk time from the site to the bus stop locations at the Horsetooth Road — Dunbar Avenue intersec- tion was assumed. Auto travel time assumed a 20-mile per hour travel speed. Auto park and walk times were assumed to total 5 minutes. Current travel times for bus and auto traffic were estimated and resulted in a travel time factor of 1.95. By 2015, it is expected that weekday service hours will be extended to at least ac- commodate any growth in demand. With the feeder transit corridor designation along Horsetooth Road, improved headways, travel times and extended service hours can be anticipated. This is expected to result in a future LOS "B" as shown on Table 3. Sincethe`siteis located outside the designated mixed use centers and commercial corridors, the established goal of LOS 'D' is exceeded. 23 specific connections to priority sites: description of destination area within 1,320' Including address Rocky Mountain High School Rossborough Park Table 2 L3icycie LU,-j vvomsneet level of service - connectivi minimum mIl I I F actual proposed base co connectivity: C I I A A destination area classification (see text) High School Recreation A A A B A A C. Levels of Service The City of Fort Collins defines level of service based upon connectivity of the site to existing and planned bicycle facilities. In this instance, the site abuts existing bicycle lanes on Horsetooth Road which connect to other bike lanes resulting in excellent connectivity in all directions. This results in level of service 'A' being realized both currently and in the future. The bicycle level of service work sheet is presented on Table 2. IX. TRANSIT A. Existing Conditions Transit stops are currently located in the vicinity of the Horsetooth Road — Dunbar Avenue intersection: Bus route 6 provides 60-minute service to this location. Service is available from 6:15 A.M. to 6:40 P.M., which is about 12'/z hours per day. Service is expanded to-17'/z hours on critical days when CSU is in session. The current peak load`factor, is less than 1.20 for a representative weekday peak hour. B. Planned Improvements Horsetooth Road is designated as a feeder transit corridor. With this designation, improved transit headways and extended service hours can be anticipated ih the future as demand increases. 21 N O TABLE 1 Pedestrian LOS Worksheet project location classification: Other - School Walk Area 0 0 101 description of applicable destination area within 1,320' including address Adjacent Neighborhoods Rossborough Park Rocky Mountain High School Bus Stop for Elementary and Junior High Schools destination area classification Other Recreational Institutional Institutional -- --- — mini -------- - !win ®0■ 0� ��■0■0■0■0� ®�■0■0■0■0� �0■0■0■0■�� ®0■0■0■0■�� ®0■0■0■v■��1 � .... -. a�■a�■�■o■fiifiiiii��� 4 � Access to adjacent neighborhoods is available via several acceptable routes including the route described to reach Rocky Mountain High School. No recreational areas are within 1,320 feet of the site; however, Rossborough Park can be easily accessed -� using the route described to the high school along Dunbar Avenue. i Based upon investigations into current and future pedestrian conditions, acceptable ' levels of service are currently being and will continue to be experienced. The pedes- trian level of service worksheet is presented on Table 1. Asshown, all pedestrian ! factors are expected to operate at LOS 'B' or better conditions. This represents i acceptable conditions per City standards. i •_ . VIII. BICYCLE FACILITIES A. Existing Conditions Horsetooth Road borders the site and currently has on -street bicycle lanes. These lanes connect to established bicycle routes on other area roadways including Dunbar Avenue, Swallow Road, Casa Grande Boulevard, and Shields Street. Additionally, a number of local streets are available for use. Excellent connectivity is therefore :7 provided in both the north -south and east -west directions. f . B. 'Planned Improvements No improvements are planned on the area bicycle system in conjunction with this development. 19 dbe in generally good condition. Pedestrian ramps are available at critical intersections and pedestrian traffic signals facilitate crossing Horsetooth Road at Royal Drive, just El west of the site. d dB. Planned Improvements dThe pedestrian system planned with Plantation Manor will conform to current City criteria. It will connect to the external pedestrian system thereby accommodating and complimenting the integration of pedestrians into the site. Sidewalk will be built along the site's frontage on Horsetooth Road. Big Ben Drive will connect to the existing dsubdivision to the north and the existing sidewalk network. C. Levels -of -Service The City of Fort Collins multi -modal transportation Level -of -Service Manual (the Manual) was used to assess both current and future pedestrian conditions. It was determined that the site fits the "other" and "school walk area" classifications. These classifications provide the basis for determining minimum level of service criteria. Five factors .were assessed under current and future conditions. Per a conversation with the school district, students from Plantation Manor will attend Johnson Elemen- tary, Weber Junior High, and Rocky Mountain High School. Students attending the elementary and junior high school are and will continue to be bused from this site. The stop is located along Horsetooth Road in front of the site. High school students are expected to either walk, bike, or get transported to school on their own. High school students living at Plantation Manor can walk north on Big Ben Drive, meander through the subdivisions to the north to the school. Alternately, they can go west to Dunbar Avenue then north to Swallow Road and east to the high school. 18 'i 71 f -I SHORT-TERM BACKGROUND TRAFFIC OPERATING CONDITIONS (With Project) INTERSECTION CONTROL APPROACH/ MOVEMENT LEVEL OF SERVICE AM PK HR PM PK HR Crescent Drive — Horsetooth Road Stop EB A A WB A_ A NB C C SB D E As shown above, acceptable operations are expected under all traffic volume sce- narios with the existing roadway geometry. Of particular importance is the fact that all levels of service for the individual traffic movements remain constant whether or not this development is built. On an overall basis, LOS A can be expected. Capacity sheets are in Appendix F. VII. PEDESTRIAN FACILITIES A. Existing Conditions The existing sidewalk system was field reviewed within 1,320 feet of the Plantation Manor site. Particular attention was given to trips to the adjacent residential area, recreation areas, and schools. Sidewalks currently exist along Horsetooth Road to the west of the site. To the east of the site, there is a breach in front of Horsetooth Stables. There is no sidewalk along Horsetooth Road adjacent to the site. Pedestrian facilities have been installed under several editions of City design stan- dards. This has resulted in varying designs; however, all facilities were determined to 17 B. Auxiliary Lanes Prior to commencing evaluation of future operating conditions with Plantation Manor fully built, peak hour traffic volumes were reviewed to determine the need for auxiliary lanes at the Horsetooth Road — Crescent Drive intersection. This resulted in the following determinations: • A left turn lane is currently numerically warranted for the westbound to southbound movement from Horsetooth Road to Crescent Drive. This movement exceeds the eastbound to northbound movement and will be the driving force behind the need for left turn lane installation. The eastbound left turn lane may also be warranted once Plantation Manor is built. This will be a direct result of background traffic diverting to this location Site traffic contributes only 1 — 2 vehicles to this movement. • The westbound right turn demand is generated by the site plus -diverted traffic. Site traffic represents about 40 percent of this movement. A warrant analysis using the total right turn demand in the short-term time frame found that the right turn lane is not warranted. Neither the left turn lane nor the right turn lane was assumed available in the short- term horizon. Warrant sheets are presented in Appendix E. C. Short -Term Operating Conditions with Plantation Manor Operating conditions with Plantation Manor fully operational were assessed using the existing roadway geometry (Figure 3) and the traffic volumes shown on Figure 7. Resultant total traffic levels of service are shown below. 16 E Ln 0 0 10 C `O s--- 260 .i : - 5 10-11 '1TfIr 900 —► LO E N 5--),°C c U y N U 0 30 0 0 C N f-- 760 20 10-JA 580 —► Ln E un °C 5 LEGEND: nom = nominal Daily NOTE: Rounded to nearest 5 vehicles or a minimum of 5 vehicles. Horsetooth AM Peak Hour Horsetooth PM Peak Hour Figure 7 2005 TOTAL TRAFFIC 15 9 A. Traffic Diversion The street system surrounding the site was reviewed to assess cut -through tr g trafficto and from Plantation Manor. This review found that traffic from nearby areas are much more likely to travel through Plantation Manor to access Horsetooth Road than the amount of site traffic traveling through the adjacent neighborhoods to access other roadways. Rossborough residents wishing to travel east on Horsetooth Road and/or south on Shields Street (or other arterial streets) will likely use the Plantation Manor connection to Horsetooth. These vehicles will be drawn from the 100± residences in the area immediately north, west, and northeast of Plantation Manor. Some 6 — 8 blocks of out -of -direction travel is required to reach Horsetooth Road and travel east. rThey will likely benefit and use the connection to Horsetooth Road through Plantation Manor. Additional connections are expected in the future with development of the parcel to the east. This will reduce traffic diverted through Plantation Manor. Site traffic cutting through the Rossborough neighborhood was also estimated. The Rossborough street system is circuitous, requiring Plantation Manor vehicles to travel west to Dunbar Avenue before proceeding to the east and north. This requires some 6 blocks of out -of -direction traffic and is not seen as an efficient outlet: Some site vehicles, however, may choose this route to get to Rocky Mountain High School. Overall, a decrease on the Rossborough street system of some 25 —:40 peak hour vehicles is expected. Site traffic expected to divert through the Rossborough neigh- borhood is expected to be significantly less. An adjustment to total peak hour traffic was made to reflect the anticipated diversion through the site. A map of the local street system and the approximate area influenced by this project are available in Appendix D. 1 Short-term total traffic is shown on Figure 7. As indicated, 665 vehicles per day will use the site access road just north of Horsetooth Road. Of these vehicles, about 440 vehicles per day are vechiles cutting through from the areas north of the site. 14 . f U 4— 260 j(_5 Horsetooth d d LEGEND: nom = nominal NOTE: Rounded to nearest 5 vehicles or a minimum of 5 vehicles. CD AM Peak Hour U c a) U M m `+. .--- 760 20 Horsetooth PM Peak Hour Figure 6 13 2005 BACKGROUND TRAFFIC Short-term conditions reflect the year 2005. This is consistent with the time frame requested by the City. By this time, Plantation Manor will be fully built and occupied. Short-term background traffic volumes are shown on Figure 6. Short-term back- ground traffic was evaluated to establish conditions at the Horsetooth Road — Cres- cent Drive intersection with the Plantation Manor development. Anticipated levels of service under those conditions are shown below. SHORT-TERM BACKGROUND TRAFFIC OPERATING CONDITIONS (Without Project) INTERSECTION CONTROL APPROACH/ MOVEMENT LEVEL OF SERVICE AM PK HR PM PK FIR Crescent Drive — Horsetooth Road Stop WB A A NB C C As indicated, all traffic movements will operate acceptably. Overall intersection operations are at LOS 'A' conditions. Capacity worksheets are in Appendix C. VI. TRAFFIC IMPACTS In order to assess operating conditions with Plantation Manor fully operational, capac- ity analyses were conducted at the Horsetooth Road — Crescent Drive intersection. Total traffic (background traffic combined with site traffic) was developed. This in- volved an assessment of traffic expected to use the site access (north of Horsetooth Road) from outside Plantation Manor and Plantation Manor traffic expected to use streets other than Horsetooth Road. This assessment is documented below. 12 Legend: Daily Horsetooth AM Peak Hour Horsetooth PM Peak Hour Figure 5 SITE TRAFFIC 11 C. Trip Distribution Trip distribution is a function of the origin and destination of site users and the avail- able roadway system. In this case, virtually all site traffic will use Horsetooth Road to access the site. Approximate site traffic distributions were calculated using current traffic patterns. This resulted in the determination that 80% of the site traffic will arrive and depart the site from and to the east. The remaining 20% is expected to arrive and depart to the west. The site connection to Big Ben Drive was considered and is discussed later in this report. Morning and afternoon peak hour traffic resulting from the distribution is presented on Figure 5. V. FUTURE CONDITIONS A. Roadway Improvements No significant major roadway improvements are planned in the area of the site in the - short-term. When and if improvements are made is largely speculative and cannot be reasonably predicted. For analysis purposes, any future improvements are assumed to occur well beyond the time frames considered in this study. B. Short -Term Background Traffic Volumes Background traffic was developed using an annual growth rate in the range of 2 percent per year. This factor was applied to existing traffic volumes to approximate short-term conditions. 10 )NCEPT - PLAN I., W /Loo Oe b/Iy nand Ile rulghbv+f000l 4CREAdE- I. b MELUN6 Uwrs PROPGia:7 39 - 7tL£LL1M5 tMrfi PER ACRE 7.95 xwSr PARK/A&,* LPACEA Ae LRow EpACE, ).74 ACRES /571J cRMcWNT . DRIVE I Figure 4 CONCEPT PLAN d IV. DEVELOPMENT ISSUES A. Project Description Plantation Manor is a residential development with some 38 townhomes. It is ex- pected that construction will start as soon as possible with completion and full occu- pancy some time in 2002. A single access point to Horsetooth Road is planned to serve this development. Secondary access is planned via a connection to Big Ben, Drive. The concept plan for this development is presented on Figure 4. B. Site Traffic Site traffic was estimated using Institute of Transportation Engineers (ITE) publication, _ "Trip Generation, 6th. Edition", a nationally recognized reference. Given the antici- pated use, a townhome/condominium land use was selected. Trips associated with Plantation Manor project are as indicatedbelow. Daily AM Peak Hour PM Peak Hour Land Use Size Rate Trips Rate In Out Rate In Out Townhome/Condominium 38 D.U. 5.86 223 0.44 3 14 0.54 14 7 As shown above, Plantation Manor is expected to generate 17 morning peak hour trips, 21 afternoon peak hour trips, and 223 trips per day. These trips are considered minor. I-J Horsetooth Figure 3 7 CURRENT ROADWAY GEOMETRY i i •� i ~ 236 �5 Horsetooth 817 ) I 4 N N i I i m U N m U f- 692 22 AM Peak Hour Horsetooth PM Peak Hour Figure 2 6 CURRENT PEAK HOUR TRAFFIC C. Existing Traffic Weekday morning and afternoon peak hour traffic counts were conducted at the Horsetooth Road — Crescent Drive intersection as part of this study. This information dis presented on Figure 2. d D. Existing Traffic Operations Highway Capacity Manual procedures were used to quantify current intersection oper- ations. Resultant levels of service (LOS) are indicated below for both morning and afternoon peak hour conditions at the. Horsetooth Road and Crescent Drive intersec- dtion. Traffic volumes from Figure 2 were loaded onto the current roadway geometry shown on Figure 3„ I CURRENT OPERATING CONDITIONS INTERSECTION CONTROL APPROACH/ MOVEMENT LEVEL OF SERVICE AM PK HR PM PK HR Crescent Drive'='Horsetooth Road Stop WB A A NB C B Per City standards; overall level of service 'E' is defined as acceptable for stop sign controlled arterial street intersections with local streets. As shown above, all traffic movements currently operate at level of service 'C' or better during peak hour periods. This is indicative of overall intersection level of service 'A'. Capacity work sheets are presented in Appendix B. 5 A d III. EXISTING CONDITIONS A. Existing Road Network The Plantation Manor site is located on the north side of the Horsetooth Road — Crescent Drive intersection. The site is bordered on the south by Horsetooth Road with the terminus of Big Ben Drive on the north. Crescent Drive lies directly across from the site to the south of Horsetooth Road. Horsetooth Road is an arterial roadway having one lane in each direction adjacent to the site. It is an east — west arterial roadway extending through most of Fort Collins. Recent daily traffic is estimated at 12,000 vehicles per day. It has on -street bicycle lanes through the area. There are no driveways along the south side of Horsetooth Road in the area of the site. The posted speed limit is 40 miles per hour. Crescent Drive is a north — south roadway that has one lane in each direction. It is a local street according to the City of Fort Collins Master Street Plan. ':. Big Ben Drive is also a local street. It has one lane in each direction and currently ends at the site's north boundary. The Horsetooth Road — Crescent Drive intersection is currently under stop sign control. B. Surrounding Land Uses The Plantation Manor site currently accommodates a single family residence. Resi- dential developments exist in all directions from the site except to the immediate east. The neighboring parcel to the east is occupied by Horsetooth Stables. 4 d II. AGENCY DISCUSSIONS Prior to undertaking this study, a scoping session was held with Eric Bracke. During that discussion, it was determined that an abbreviated transportation impact study was appropriate. Key items of agreement and direction are identified below. • A full assessment of pedestrian, bicycle, and transit levels of service, needs to be conducted. The Horsetooth Road — Crescent Drive intersection, the future north leg of which will become the primary site access, should be investigated. Week- day morning and afternoon peak hour conditions should be investigated. Other intersections are considered negligible. • An assessment of existing and future short-term conditions is appropr'iete;;_; The short-term was identified as the year 2005. This will easily include the buildout of Plantation Manor. Traffic growth on nearby arterial streets of 2 percent per year is reasonable to estimate future background traffic. • Mr. Bracke specifically asked that the impact of site traffic to the neighbor hoods to the north be evaluated. The above items are included or addressed in the following sections of this report. The Base Assumptions and Pedestrian Analysis forms are available in Appendix A. i1 Figure 1 2 VICINITY MAP d I. INTRODUCTION Plantation Manor is a residential development planned along the north side of Horse - tooth Road across from Crescent Drive in Fort Collins, Colorado. A vicinity map is presented on Figure 1. This transportation impact study follows the established guidelines for such studies as dare applicable and appropriate to the proposed project. The following key steps were undertaken as part of this study. q Obtain current traffic and roadway data in the immediate area of the site. a Evaluate current operations to establish base conditions. Determine site generated traffic volumes and distribute this traffic to the r4 nearby street system. • Estimate roadway traffic volumes for future conditions. • Evaluate operations with Plantation Manor fully operational under short term future conditions. • Inventory, evaluate, and assess the pedestrian, bicycle, and transit net-_.-.-'- works serving the site. • Identify deficiencies and recommend measures to mitigate the impact of site generated traffic and enhance the altemate travel mode systems as appropriate. Key areas of investigation are documented in the following sections of this transporta- tion impact study. List of Tables Table 1 Pedestrian LOS Worksheet........................................................................20 Table 2 Bicycle LOS Worksheet..............................................................................22 Table 3 Future Transit Level of Service...................................................................24 a List of Figures Figure 1 Vicinity Map ................................. ............................................2 Figure 2 Current Peak Hour Traffic..........................................................................6 7 Figure 3 Current Roadway Geometry .......................................................... . ........... 9 Figure4 Concept Plan...........................................................................................1 Figure5 Site Traffic............................................................................................... Figure 6 2005 Background Traffic ........................................................................13 Figure 7 2005 Total Traffic.................................................................. ..................15 ='- Table of Contents 1 I. INTRODUCTION...............................................................................................1 If. AGENCY DISCUSSIONS..................................................................................3 III. EXISTING CONDITIONS...................................................................................4 A. Existing Road Network......................................................................................4 B. Surrounding Land Uses.....................................................................................4 C. Existing Traffic...................................................................................................5 D. Existing Traffic Operations.................................................................................5 IV. DEVELOPMENT ISSUES..................................................................................8 A. Project Description.............................................................................................8 B. Site Traffic..........................................................................................................8 C. Trip Distribution................................................................................................10 V. FUTURE CONDITIONS...................................................................................10 j A. Roadway Improvements..................................................................................10 B. Short -Term Background Traffic Volumes.........................................................10 VI. TRAFFIC IMPACTS...............................:.........................................................12 A. Traffic Diversion.............................................................. .... ........ .... .........:.......14 ' B. Auxiliary Lanes..................................................................................................16 C. Short -Term Operating. Conditions with Plantation Manor.................................16 VII. PEDESTRIAN FACILITIES ................... :::........................................................ 17 A. Existing Conditions..........................................................................................17 �. B. Planned Improvements....................................................................................18 C. Levels -of -Service ................................................ .............18 ................................ Vill. BICYCLE FACILITIES.....................................................................................19 A. Existing Conditions..........................................................................................19 B. Planned Improvements....................................................................................19 C. Levels of Service ......................... :................................................................... 21 IX. TRANSIT ................................ .........................21 A. Existing Conditions..........................................................................................21 B. Planned Improvements .................................. ..........21 ........................................ C. Levels of Service....................................................................:.........................23 X. CONCLUSIONS..............................................................................................25 Transportation Impact Study 4 PLANTATION MANOR Fort Collins, Colorado Prepared "For: Bret Larimer Ltd. 1600 W. Horsetooth Road Fort Collins, CO 80526 Prepared. By: Eugene G.,Coppola P. 0.� Box 260027 Littleton, CO .80127 303-7927-2450 September 18, 2000