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HomeMy WebLinkAbout03-09 Traffic Impact AnalysisA Traffic Impact Analysis of the Walgreens at Dairy Corner Place Located in: Frederick County, Virginia Prepared for: Red Leaf Development P.O. Box 10655, Towson, MD 21285 Prepared by: Patton Harris Rust Associates End news. Surveyors. Planners. Lcndsccpe Architects. 10212 Governor Lane Blvd, Suite 1007 Williamsport, Maryland 21795 T 301.223.4010 F 301.223.6831 September 04, 2008 OVERVIEW Report Summary Patton Harris Rust Associates (PHR +A) has prepared this document to present the traffic impacts associated with the proposed Walgreens at Dairy Corner Place development to be located along the southeast quadrant of the intersection of Valley Mill Road/Dairy Corner Place, south of Route 7 (Berryville Pike), in Frederick County, Virginia. The proposed development is to include 15,000 square feet of pharmacy and a 10,000 square foot medical office building. Access will be provided via a full access site driveway to be located along the east side of Valley Mill Road as well as a right in/right out only site- driveway to be located along south side of Dairy Corner Place. The proposed development will be built -out over a single transportation phase by the year 2010. Analyses are provided for existing, 2010 background and 2010 build -out year. Figure 1 is provided to illustrate the location of the proposed Walgreens at Dairy Corner Place development with respect to the surrounding roadway network. Methodology The traffic impacts accompanying the Walgreens at Dairy Corner Place development were obtained through a sequence of activities as the narratives that follow document: Assessment of background traffic including other planned projects in the area of impact, Calculation of trip generation for the proposed Walgreens at Dairy Corner Place development, Distribution and assignment of the Walgreens at Dairy Corner Place development generated trips onto the completed roadway network, Analysis of capacity and level of service using the latest version of Synchro 7 for existing and future conditions. A Traffic Impact Analysis of the Walgreens at Dairy Corner Place Project Number: 15824 -1 -0 September 04, 2008 Page 1 Vicinity Map: Walgreens at Dairy Corner Place, in Frederick County, VA A Traffic Impact Analysis of the Walpreens at Dairy Corner Place Project Number: 15824 1 0 September 04, 2008 Page 2 EXISTING CONDITIONS PHR +A conducted weekday AM/PM and Saturday mid -day peak hour manual turning movement counts at the intersection of Route 7 (Berryville Pike) /I -81 SB Ramps, Route 7 (Berryville Pike) /I -81 NB Ramps/Valley Mill Road, Route 7 (Berryville Pike)/Martin Lane, Route 7 (Berryville Pike) /Gateway Drive and Valley Mill Road /Dairy Corner Place. In order to determine the ADT (Average Daily Trips) along the study area roadway Links, "k" factor (the ratio of PM peak hour traffic volumes to 24 -hour traffic volumes) of 7.7% was utilized based upon the published Virginia Department of Transportation (VDOT) 2006 traffic count data. Figure 2 shows the existing weekday and Saturday ADT as well as weekday AM /PM peak hour and Saturday mid -day peak hour traffic volumes at key locations within the study area. Figure 3 shows the existing lane geometry and weekday AM/PM peak hour and Saturday mid -day peak hour levels of service. Existing condition analysis is based upon VDOT signal timing. PHR +A has provided Table 1 to show the existing weekday AM/PM and Saturday mid -day peak hour levels of service and 95 percentile back of queue for each lane group. All traffic count data and Synchro level of service worksheets are included in the Appendix section of the report. A Traffic Impact Analysis of the Wa1¢ reens at Dairy Corner Place Project Number: 15824 -1 -0 September 04, 2008 Page 3 1174$239)1741 (5021(1057)645�� 126](19)■ 0930 PHRA r Figure 2 3■6011 No Scale Li.430(52315131 ■775(869)177 .81(28)1421 [l351(17e)86■ [0 10](921)981 �y [2781(361)160 cf SITE 4- pa/ it x24 1a i 229(401)128 797(1103)110 (24(88011 AM Peak Hour(PM Peak Hour)[SAT Peak Hour] Existing Traffic Conditions tRit Saturday ADT A Traffic Impact Analysis of the Wal¢reens at Dairy Comer Place Project Number: 15824-1-0 September 04, 2008 Page 4 e](ti)D _p r Figure 3 Signalized Intersection LAS= D(C)ICI 0(A)ICI r 2 0 ICHC)Ct Signalized J (Insignalized Intersection Intersection LOS D(D)IDI Right In/Out Only tC(o)[D] 4 Signalized Intersection LOS C(C)1131 6(c) Co v gaaSIC as, J n Existing Lane Geometry and Levels of Service /1<1 gel(C)C4 Unsignalized Intersection 1Y r Denotes Unsignalized Critical Movement AM Peak Hour(PM Peak Hour)ISAT Peak Hour] fChannelized Right turn -lane with 'STOP' condition (Channelized Right turn -lane with 'YIELD' condition NOTE: Analysis is based upon VDOT Signal Timing A Traffic Impact Analysis of the Walgreens at Dairy Corner Place Project Number: 15824-1 -0 September 04, 2008 Page 5 Intersection Traffic Control Lane Group/ Approach AM Peak Hour PM Peak Hour Saturday Peak Hour LOS Back of Queue LOS Back of Queue LOS Back of Queue Rouse 7 1 -81 SB Ramps/Shoney's Entrance S EB /L C 126.0 B 123.0 B 95.0 EB/T B 224.0 B 414.0 C 307.0 EB/TR EB LOS B R C WB /L D 25.0 A 25.0 B 25.0 WB/I' -Sane 1 E 395.0 A 54.0 C 234.0 WB/I' -Lane 2 WB /R A 25.0 A 25.0 A 25.0 WB LOS D A C NB/LT 1) 28.0 E 75.0 1) 63.0 NB /R C 25.0 C 36.0 C 25.0 NB LOS D D D SB/L 0 449.0 F 387.0 0 303.0 SB /LT F 440.0 F 385.0 0 3110 SB/R A 25.0 A 25.0 A 25.0 SB LOS F F E Over II LOS D C C Rome 7 &1 -81 NB RampsNalley Mill Road Signalized EB /L C 590 E 188.0 D 109.0 BB/I' -lane 1 D 352.0 C 357.0 C 271.0 EB/T -Lane 2 EB/R A 66.0 A 113.0 A 28.0 EB LOS C C C WB /L C 29.0 C 41.0 B 25.0 WB/I' -Lane 1 D 418.0 E 746.0 E 608.0 WH(FLane2 WB /R A 25.0 A 25.0 A 25.0 WB LOS C D D NB /L 0 464.0 F 540.0 E 371.0 NB /I'R D 273.0 E 245.0 D 165.0 NR LOS E F E SB /L E 364.0 E 445.0 E 298.0 SB/LT E 356.0 F, 454.0 3 297.0 SB /R A 25.0 A 25.0 A 25.0 SB LOS D E D Over 11 LOS D D D Route 7 Gateway Drive Signalized EB /L -Lane 1 D 56.0 D 227.0 C 208.0 EBIL -Lane 2 EB/T-Lane I 0 671.0 A 213.0 A 33.0 EB/T-lane 2 ER LOS C B B WB /LU D 35.0 E 28.0 D 38.0 WB/I' -lave 1 B 313.0 C 615.0 C 449.0 WB/r -Lane 2 WB /R A 25.0 A 66.0 A 44.0 WB LOS 13 C C SB/1-Lane 1 D 46.0 D 106.0 D 87.0 SB /L -Lane 2 SB/R-Lane 1 A 26.0 A 48.0 A 43.0 SBIR -Lane 2 SB LOS C C B Over 111.05 C (2 R Route 7 Martin Lane Unsignalized EB/T F,B/TR WB/T-Lane 1 WB/T -Lane 2 NB /R Valley Mill Road Dairy Comer Place Unsignalized EBILTR C 25.0 C 25.0 C 25.0 WB /LTR H 25.0 H 25.0 B 25.0 NB /L A 25.0 A 25.0 A 25.0 NB/TR SBILTR A 25.0 A 25,0 A 25.0 Table 1 Walgreens at Dairy Corner Place Levels of Servi e and Back of Queue (95 Results Existing Conditions Assumed 25 feet Vehicle Length Minimum queue le gh assumed o be 25 feet BR Eastbound, WR =Westbound. NB Northbound, 50 Suet [Wound L Left, T:Thru. R: Right A Traffic Impact Analysis of the Walgreens at Dairy Corner Place Project Number: 15824 -1 -0 September 04, 2008 Page 6 2010 BACKGROUND CONDITIONS PHR +A grew the existing traffic volumes (shown in Figure 2) using a rate of 6% per year through Year 2010. There are no "planned" background developments in the vicinity of the site. Figure 4 shows the 2010 background weekday and Saturday ADT as well as weekday AM /PM peak hour and Saturday mid -day peak hour traffic volumes at key locations throughout the study area. Figure 5 shows the corresponding 2010 background lane geometry and AM/PM peak hour and Saturday mid -day peak hour levels of service. Table 2 is provided to show the 95 percentile back of queue and levels of service for each lane group during 2010 background conditions. Synchro Levels of service worksheets are provided in the Appendix section of this report. A Traffic Impact Analysis of the WalRreens at Dairy Corner Place Project Number: 15824 -1 -0 September 04, 2008 Page 7 342211 61 1 16311) 1■4 88(5881[ 11(2 9X0)IX7 9 1 11(2811421 %A...2570510181 4 ■895(12401U2081 x2](9911 No Scale 12IM na 11961269)196 [9041(1191)726 1261117)6 ■1% 32 [21(01] 211 L..1(2)1 X6(08 (66111u)[ -P Figure 4 11521(200)97■f [910101042)1102 0 [3121(405)1811% oa;n [121( 13: 1d 10 ��v2 0 0 0 A SITE v 4126 Mi t R o W eekd a l T Saturday ADT AM Peak Hour(PM Peak Hour)[SAT Peak Hour] 2010 Background Traffic Conditions A Traffic Impact Analysis of the Walgreens at Dairy Corner Place Project Number: 15824 -1 -0 September 04, 2008 Page 8 1 ra No Scale r -PHRA r Figure 5 Signalized 2 Intersection N LOS C(C$CI 4 so 13(A)fsl No Improvements Required b jsInt er elize. intersectlorn OSC(C) C F S� G p. Signalized 3 Intersection LOS U(E)IEI 4,B(CIID1 r tr "Suggnter] Improvement" WB I Thru NB I Left SB 1 Left Unsignalieed Intersection Right In/Out Onl No Improvements Required J2 SITE 4 ERB Signalized Intersection LOS B(BACI No Improvements Required 5 7. �m� sCi(C1C 4 •ICI 2010 Background Lane Geometry and Levels of Service Unsignalized Intersection 3 B(B)llr No Improvements Required Denotes Improvements Denotes Unsignalized Critical Movement AM Peak Hour(PM Peak Hour)[SAT Peak Hour] fChanneIized Right turn -lane with 'STOP' condition f Channelized Right turn -lane with 'YIELD' condition A Traffic Impact Analysis of the Walgreens at Dairy Corner Place Project Number: 15824 -1 -0 September 04, 2008 Page 9 Intersection Traffic Control Lane Gr up/ Approach AM Peak Hour PM Peak Hour Saturday Peak (lour LOS Back of Queue LOS Back of Queue LOS Back of Queue Route 7 1 -81 SB Ramps /Shoney's Entrance Si lined gnu EB/L 0 244.0 E 366.0 D 2040 EB/f C 265.0 C 482.0 B 317.0 EB/TR EB LOS C C C WB /1, B 25.0 B 25.0 A 25.0 WB/f -Lane) C 383.0 B 220.0 A 119.0 WB/T -Lane 2 WB/R A 25.0 A 25.0 A 25.0 WB LOS B A A NB /LT D 27.0 E 73.0 E 70.0 NB /R C 25.0 C 35.0 C 27.0 NB LOS C D D SB /L E 444.0 E 285.0 E 382.0 SBILT E 457.0 E 282.0 E 385.0 SB/R A 25.0 A 25.0 A 25-0 SB LOS D D D Over 11 LOS C C C Route NB Ramps/Valley Mill Road Signalized EB/L E 111.0 E 227.0 F 221.0 EB/f -Lane 1 D 582.0 C 5010 C 341.0 013/T-Lane 2 EB/f -Lane3 013/R A 25.0 A 25.0 A 25.0 EB LOS C C C WB /L D 31.0 E 94.0 D 91.0 WB/T-Lane 1 C 193.0 C 353.0 B 313.0 WB/T -lane 2 WB/T-Lane WB /R A 25.0 A 25.0 A 25.0 WB LOS B C B NB/L-Lane 1 C 148.0 E 174.0 D 144.0 NB/L-Lane 2 NB/TR E 289.0 D 216.0 E 220.0 NB LOS D D D SB/L-Lane 1 E 284.0 E 250.0 D 206.0 SB/L-Lane 2 SBIr D 85.0 D 174.0 D 96.0 513/R A 25.0 A 25.0 A 25.0 SB LOS D D D Over 11 LOS C C C Route 7 Gateway Drive Signalized FB/L-Lane 1 D 55.0 D 155.0 C 187.0 EB /L -Lane 2 EB/C -lent 1 A 151.0 A 206.0 A 202.0 EB/T -Lane 2 EB LOS A A B W0/LU E 38.0 E 27.0 E 43.0 WB/1' -level B 288.0 C 566.0 D 730.0 WB/f -Lane 2 WB/R A 25.0 A 40.0 A 68.0 WB LOS It B C SB/L-Lane 1 D 55.0 E 112.0 E 143.0 SB/L-Lane 2 SB/R-Lane 1 B 31.0 B 52.0 B 56.0 SB/R -Lane 2 SB LOS C C C Over 11 LOS B B C Route 7 Martins Lane Unsignalized EB/f EB/I'R WB/GLane 1 WB/f -Lane 2 NB /R Valley Pike Dairy Corner Place Unsignalized EB/LTR C 25.0 C 25.0 C 25.0 WB /LTR B 25.0 B 25.0 B 25.0 NB /1. A 25.0 A 25.0 A 25.0 NB/TR A 25.0 A 25.0 A 25.0 SB /LTR A 25.0 A 25.0 A 25.0 Table 2 Walgreens at Dairy Corner Place Le els of Servi e and Back of Queue (95 Results 2010 Background Conditions (w/ assumed Improvements) Assumed 25 feet Ve ide Length Minimum queue le gth assumed to be 25 feet ER Rosamund, WB Westbound, NB Northbound, SIi Southbound L: Led. T:Thm, R: Right A Traffic Impact Analysis of the Walgreens at Dairy Corner Place Project Number: 15824 -1 -0 September 04, 2008 Page 10 ITE Code Land Use Amount In AM Peak Hour Out Total In PM Peak Hour Out Total ADT In Sat Peak Hour Out Total ADT 720 881 Mad/Dental Office Bldg 10000 SF Pharmacy wl DT 15,000 SF Sub -Total Parr -by Trips 40% (Code 881) Total "New" Tripe 20 23 42 8 34 5 17 22 8 14 25 40 65 86 49 IB 63 73 26 47 27 66 93 26 67 37 129 11.6 52 115 194 4322 1,516 529 987 21 59 80 24 56 16 59 74 24 51 36 118 154 47 107 90 1322 1,412 529 983 TRIP GENERATION PHR +A determined the number of trips entering and exiting the site using equations and rates provided in the 7 Edition of the Institute of Transportation Engineers' (ITE) Trip Generation Report. Table 3 is provided to summarize the total trip generation associated with the proposed development. 2010 BUILD -OUT CONDITIONS Table 3 Walgreens at Dairy Corner Place Trip Generation Summary TRIP DISTRIBUTION AND TRIP ASSIGNMENT The distribution of trips was based upon local travel patterns for the roadway network surrounding the proposed site. PHR+A utilized the trip distribution percentages shown in Figure 6 to assign the proposed Walgreens at Dairy Corner Place development trips (Table 3) throughout the study area roadway network. Figure 7 shows the development generated AM/PM peak hour and Saturday mid -day peak hour trips and ADT assignments. The Walgreens at Dairy Corner Place assigned trips (Figure 7) were added to the 2010 background traffic volumes (Figure 4) to obtain 2010 build -out conditions. Figure 8 shows the 2010 build -out weekday and Saturday ADT as well as weekday AM/PM peak hour and Saturday mid -day peak hour traffic volumes at key locations throughout the study area network. Figure 9 shows the respective 2010 build -out lane geometry and weekday AM/PM peak hour and Saturday mid -day peak hour levels of service. Table 4 shows the 95 percentile back of queue and levels of service for each lane group during 2010 build out conditions. All Synchro levels of service worksheets are included in the Appendix section of this report. A Traffic Impact Analysis of the Walgreens at Dairy Corner Place Project Number: 15824 -1-0 September 04, 2008 Page 11 r Trip Distribution Percentages A Traffic Impact Analysis of the Wal➢reens at Dairy Corner Place Project Number: 15824 -1 -0 September 04, 2008 Page 12 Pia j JlL r -PHRA r Figure 7 ■119)>1 4■ r fi t f [36 (-u)a.ni [Jfi1pJ)10■n i L .0. 1 713506 1) Up51t161 I I( yl 4#0.1 0 ,1)9M R Weeltdddday$A Development- Generated Trips Assignment Saturday ADT AM Peak Hour(PM Peak Hour)[SAT Peak Hour] A Traffic Impact Analysis of the Walgreens at Dairy Corner Place Project Number: 15824 -1-0 September 04, 2008 Page 13 Any 54110 MEI [19611269)1961 1 f 19201(1204)737 1261(19)6 16266 168 N=1.490(597)1 8811(101[1)18931 /"11(2811421 (15211200)92 18991(1029)1098. 63491(43 tis 259(450131 4Is 891(12271111991 44(133)11161 SITE No Scale -P RA r Figure 8 WeekdayiAD, Saturday ADT AM Peak Hour(PM Peak Hour)[SAT Peak Hour] 2010 Build -out Traffic Conditions A Traffic Impact Analysis of the Walereens at Dairy Corner Place Project Number: 15824 -1 -0 September 04, 2008 Page 14 Un I e ne inItt Intersec ignalized No Scale No Improvements Required P r Figure 9 2 se B(C)IRI Signalized 2 Signalized Interaction g Intersection LOS. C(C)lill a LOS= D(E)ID1 V j �B(o Al m y r Y I I 1V -s S "Suggested Improvements' Wn I Thnt NB I Len SP I Left SITE 3 Unsignalized Intersection Night In/Out Only No Improvements Required Ar io Roan 4 A Traffic /mnact Anal), Signalized J Intersection LOS= B(B)ICI No Improvements Required Ell Denotes Improvements Denotes Unsignalized Critical Movement AM Peak Hour(PM Peak Hour)[SAT Peak Hour] (TChannelized Right turn -lane with 'STOP' condition tChannelized Right turn -lane with 'YIELD' condition 2010 Build -out Lane Geometry and Levels of Service Unsignalized Intersection i e BIRIII Y No Improvements Required of the Walereens at Dairy Corner Place Project Number: 15824 -1 -0 September 04. 2008 Page 15 Ink rvlion Traffic Control Lane Gr up/ Approach AM Peak Hour PM Peak Hour Saturday Peak Hour LOS Bark of Queue LOS Back of Queue LOS Back of Queue Route 7 1 -81 SB Ramps /Shaney'e Entrance Signalized ER /I, E 267.0 0 376.0 C 158.0 EBR C 306.0 C 491.0 B 325.0 EB /TR ER LOS C C C WBIL B 25.0 0 25.0 A 25.0 WB -Lane l C 377.0 B 241.0 A 170-0 WB/T-Lane 2 WB /R A 25.0 A 25.0 A 25.0 WB LOS B A A NB/LT E 32.0 E 73.0 E 70.0 NB /R C 22.0 C 35.0 C 27.0 NB LOS D D SB /L E 437.0 E 291.0 E 293.0 SB /LT E 448.0 E 286.0 E 295.0 SB /R A 35.0 A 25.0 A 25.0 SB LOS D D D Overall LOS C C B Route 701 -81 NB Ramps/Valley Mill Road Signe d EB /L E 116.0 E 254.0 F 216.0 EB/f -Lane 1 C 501.0 D 542.0 C 424.0 EBfr -lane 2 EB/R A 25.0 A 38.0 B 202.0 ER LOS C C C WB/I, D 55.0 E 160.0 D 130.0 WB/T-Lane 1 B 154.0 C 351.0 8 272.0 WIRT -lane 2 WB/r -Lane 3 WB/R A 25.0 A 25.0 A 25.0 WB LOS B C B NB/L -Lana 1 C 145.0 D 186.0 C 136.0 NB /L -Lwc2 NB/ER E 310.0 E 257.0 E 228.0 NB LOS D D D SB/L-Lane 1 E 295.0 E 260.0 D 206.0 SB/L-Lane 2 5811 E 120.0 E 227.0 P 149.0 SR/R A 25.0 A 25.0 A 25.0 SR LOS D D D Overall LOS C C C Route 7 Gateway Drive Signalized EB/L-Lane 1 D 78.0 D 158.0 C 155.0 EB/L -Lane 2 EB /I -Land A 149.0 A 212.0 A 194.0 EB/T -Lane 2 EB LOS A A A WB/LU E 44.0 E 27.0 E 41.0 WB? -loot 1 8 360.0 C 583.0 C 621.0 WB/1' -Lane 2 WB /R A 25.0 A 41.0 A 57.0 WB LOS R R C SBIL -Lave 1 E 62.0 E 122.0 E 124.0 SB/L, la0e 2 SB /RLmm 1 B 32.0 B 53.0 B 51.0 SB/R -Lane 2 SB LOS 0 C C Over- 11 LOS R B C Route 7 Martins Lane Unsignalized EMT ER/TR W8La r1 ne 1 WBm -Lane 2 NB /R Valley Pike Dairy Comer Place Unsignahzed ER/LTR C 25.0 D 25.0 D 25.0 WR/LTR B 25.0 B 25.0 C 25.0 NB/L A 25.0 A 25.0 A 25.0 NB/ R A 25.0 A 25.0 A 25.0 SB/LTR A 25.0 A 25.0 A 25.0 Valley Mill Road Site- Driveway/42 Unsignalizc WB /LR B 25.0 B 25.0 B 25.0 NB/LR SB/LT A 25.0 A 25.0 A 25.0 Dairy Comer Place le- DrivcwayNl R.ghl In/Right Out 0B ?R WR/r NB /R Table 4 Walg eons at Dairy Corner Place Levels of Servi e and Back of Queue (95 Results 2010 Build -out Conditions (w/ assumed Improvements) Assnn 01 25 feu Vebicle Length Minimum queue le gth assumed m he 25 fect EP iastbound. W8= Weatbot 4NB= Northbound, SB= Southbound L: Lett, T'.Tluu, R: Right A Traffic Impact Analysis of the WalRreens at Dairy Corner Place Project Number: 15824 -1 -0 September 04, 2008 Page 16 CONCLUSION Based upon Synchro analysis results, assuming the suggested improvements as shown in Figure 9, all the study area intersections associated with the proposed Walgreens at Dairy Corner Place will maintain overall level of service "C" or better during 2010 build -out conditions. The following describes the improvements suggested for the study area intersections to maintain acceptable levels of service "C" or better during 2010 build out conditions: Route 7 (Berryville Pike)/I -81 SB Ramps: No improvements are required. Route 7 (Berryville Pike)/I -81 NB Ramps/Valley Mill Road: This intersection will require improvements of a westbound through lane, a northbound left -tum lane and a southbound left -turn lane. (The aforementioned improvements are also necessary without the proposed Walgreen at Dairy Corner Place development). Route 7 (Berryville Pike)/Martin Lane: No improvements are required. Route 7 (Berryville Pike) /Gateway Drive: No improvements are required. Dairy Corner Place /Site- Driveway #1: This is a new unsignalized right in /out only intersection. Valley Mill Road /Site Driveway #2: This is a new unsignalized intersection. NOTE: Funding source for the aforementioned improvements have yet to be identified. The applicant will work with VDOT /County to accommodate pedestrian and bicycle facilities adjacent to the site. A Traffic Impact Analvsis of the Walcreens at Dairy Corner Place Project Number: 15824 -1 -0 September 04, 2008 Page 17