HomeMy WebLinkAbout04-09 Traffic Impact AnalysisA Traffic Impact Analysis of
Wampler Property
Located in:
Frederick County, Virginia
Prepared for:
Mr. Jack Wampler
2648 Martinsburg Pike,
Stephenson, VA 22656
Prepared by:
Patton Harris Rust Associates
Engineers. Surveyors. Planners. Lcndsccpe Architects.
10212 Governor Lane Boulevard
Suite 1007
Williamsport, Maryland 21795
T 301.223.4010 F 301.223.6831
March 11, 2008
OVERVIEW
Report Summary
Patton Harris Rust Associates (PHR +A) has prepared this document to present
the traffic impacts associated with the proposed Wampler Property to be located at the
northwest quadrant of Route 11 (Martinsburg Pike) and Old Charlestown Road
intersection, in Frederick County, Virginia. PHR +A has prepared analysis for two (2)
possible scenarios of the proposed development. Scenario 1 assumes 12 -pump gas station
with convenience mart. Scenario 2 assumes 37,365 square feet of self- storage warehouse.
Access to the site will be provided via a site driveway along west of Route 11. The
proposed development will be built -out over a single transportation phase by the year 2012.
Figure 1 is provided to illustrate the location of the Wampler Property with respect to the
surrounding roadway network.
Methodology
The traffic impacts accompanying Wampler Property 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 Wampler Property,
Distribution and assignment of the Wampler Property generated trips onto the study
area road network,
Analysis of capacity and level of service using SYNCHRO for existing and future
conditions.
A Traffic Impact Analysis of the Wampler Property
March 11, 2008
Project Number- 15291 -1 -2
Page 1
Vicinity Map: Wampler Property, in Frederick County, VA
A Traffic Impact Analysis of the Wampler Property
March I I, 2008
Project Number- 15291 -1 -2
Page 2
EXISTING CONDITIONS
PHR +A conducted AM and PM peak hour manual turning movement counts at the
intersections of US Route 11/ Old Charlestown Road, US Route 11/ Stephenson Road and
US Route 11 /Hopewell Road /Brucetown Road. PHR +A established the ADT (Average
Daily Traffic) along each of the study area roadway links using a "k" factor (the ratio of
PM peak hour traffic volumes to 24 -hour traffic volumes) of 10
Figure 2 shows the existing ADT and AM/PM peak hour traffic volumes at key
locations throughout the study area. Figure 3 shows the respective existing lane geometry
and AM/PM peak hour levels of service. All traffic count data and SYNCHRO levels of
service worksheets are included in the Appendix section of this report. PHR +A has
provided Table 1 to show the 95 percentile back of queue and levels of service for each
lane group during existing conditions.
A Traffic Impact Analysis of the Wampler Property
March 11, 2008
Project Number- 15291 -1 -2
Page 3
No Scale
AM Peak Hour (PM Peak Hour)
gt*Mirage
_p
r Figure 2
Existing Traffic Conditions
A Traffic Impact Analysis of the Wampler Property
March 11, 2008
Project Number 15291 -1 -2
Page 4
No Scale
Unsignalized
Intersection
Unsignalized
Intersection
AM Peak Hour (PM Peak Hour)
Denotes Two -way Left turn lane
Denotes critical unsignalized movement
_PHRA
r Figure 3
P
Existing Lane Geometry and Levels of Service
A Traffic Impact Analysis of the Warnpler Property
March I I, 2008
Project Number-15291-1-2
Page 5
Intersection
Traffic
Control
Lane
Group/
Approach
AM Peak Hour
PM Peak Hour
LOS
Back of
Queue
LOS
Back of
Queue
Route 1 I Old Charlestown
Road
Unsignalized
WB /LR
B
25.0
B
25.0
NB /TR
SB/L
SB /T
A
25.0
A
25.0
Route 11 Stephenson Road
Unsignalized
WB/LR
B
25.0
B
25.0
NB /TR
SB /L
SB /T
A
25.0
A
25.0
Route 11 Hopewell
Rd/Brucetown Rd
Unsignalized
EB/LTR
B
25.0
C
49.0
WB /LTR
C
35.0
C
55.0
NB /L
NB /TR
A
25.0
A
25.0
SB/L
SB/TR
A
25.0
A
25.0
Table 1
Wampler Property
Levels of Service and Back of Queue (95 Results
Existing Conditions
Assurn d 25 feet Vehicle Length
EB Eastbound, WB Westbound, NB Nortl bound, SB Southbound
L: Left, T:Thru, R: Right
Minimum queue length is assumed to be 25 feet
A Traffie Impact Analysis of the Wanipler Property
March I I, 2008
Project Number 15291 -1 -2
Page 6
2012 BACKGROUND CONDITIONS
PHR +A increased the existing traffic volumes (Figure 2) along US Route 11, Old
Charlestown Road, Stephenson Road, Hopewell Road and Brucetown Road using a growth
rate of two percent (2 per year through Year 2012. Additionally, all trips relating to
specific future "other developments" located within the vicinity of the proposed
development were included. Based upon the 7 Edition of the Institute of Transportation
Engineers' (ITE) Trip Generation Report PHR +A has provided Table 2 to summarize the
calculated trips associated with each of the 2012 "other developments
Figure 4 shows the 2012 background ADT and AM /PM peak hour traffic volumes
at key locations throughout the study area roadway. Figure 5 shows the corresponding
2012 background lane geometry and AM/PM peak hour levels of service. SYNCHRO
levels of service worksheets are provided in the Appendix section of this report. PHR +A
has provided Table 3 to show the 95 percentile back of queue and levels of service for
each lane group during 2012 background conditions.
A Traffic Impact Analysis of the Wampler Property
March 11, 2008
Project Number 15291 -1 -2
Page 7
Code Land Use
Amount
In
AM Peak flour
Out Total
In
PM Peak Hour
Out Total
ADT
Rutherford Crossing
130 industrial Park
215,000 SF
152
33
186
44
164
208
1,814
862 Home impr. Superstore
117,000 SF
76
65
140
135
152
287
3,581
815 Discount Store
127,000 SF
73
34
107
321
321
643
7.115
814 Specialty Retail
187,147 SF
139
89
228
207
264
471
8,044
932 II -T Restaurant
5,000 SF
30
28
58
33
21
55
636
934 Fast Food w /DT
4,5005F
122
117
239
81
75
156
2.233
932 H -T Restaurant
4,800 5F
29
27
55
32
20
52
610
932 H -T Restaurant
5.500 5F
33
30
63
37
23
60
699
932 II -T Restaurant
7,200 5F
43
40
83
48
31
79
915
912 Drive -in Bank
4,100 SF
28
22
51
94
94
188
1.004
Total
725
485
1,210
1,031
1,165
2,197
26,652
Other Developments
730 FEMA
350 employees
190
24
214
86
191
277
2,713
812 Building/Lumber Store
15,000 5F
26
13
39
33
37
70
639
Total
216
37
253
119
228
347
3,352
Stephenson Village'
210 Single Family Detached
429 units
77
232
310
255
144
399
4.290
220 Apartment
240 units
20
103
123
100
49
149
1,573
230 Townhouse/Condo
390 units
26
125
150
127
62
189
3,393
251 Elderly I lousing Detach
266 units
29
51
80
78
44
123
1,064
253 Elderly Housing Attach
72 units
3
2
5
4
3
7
251
Total
155
513
667
564
302
866
10,570
North Stephenson
110 Light Industrial
800,000 SF
752
103
855
118
863
981
5,874
Total
752
103
855
118
863
981
5,874
Adams Commercial
150 Warehousing
120,000 SF
78
17
95
19
57
75
792
151 Self-Service Storage
140,0(10 SF
12
9
21
18
17
35
334
710 Office
120,000 SF
191
26
217
36
177
213
1.535
812 Building/Lumber Store
25,000 SF
44
21
65
59
67
126
1,024
860 Wholesale Market
150,000 SF
41
34
75
14
17
32
1,010
Total
366
107
473
146
334
481
4,695
Woodside Commercial Center
820 Retail
75,000 SF
80
51
132
249
269
518
5,633
Total
80
51
132
249
269
518
5,633
Easy Living Associates Commercial Property
151 Self- Service Storage
35,000 50
3
5
4
4
8
82
710 Office
35,000 SF
71
10
81
20
98
118
594
8211 Retail
45,000 SF
59
38
97
177
192
370
4,041
934 Fast Food w/ DT
5,000 SF
135
130
266
90
83
173
2,481
945 Gas Station w/ Mart
16 pumps
80
80
161
11)7
107
214
2,604
Total
349
260
610
399
484
883
9,803
Clearhrook
120 GA I leavy Industrial
120.000 SF
54
7
61
3
20
23
180
932 H -T Restaurant
8.000 S0
48
44
92
53
34
87
1,017
Total
102
52
153
56
54
110
1.197
Assumed Phase 1 build -nut for Year 2010
Table 2
2012 "Other" Developments
Trip Generation Summary
A Traffic Impact Analysis of the Wampler Property
March I I, 2008
Project Number 15291 -1 -2
Page 8
No Scale
p
r Figure 4
2012 Background Traffic Conditions
AM Peak Hour(PM Peak Hour)
verage DailvaTrij s
A Traffic Impact Analysis of the Wampler Property
March 11, 2008
Project Number 15291 -1 -2
Page 9
No Scale
:Si c
fnterseetion
;LOS -C(Cj,
"Suggested
Improvements'.
Sigoalientinn
NB 1 Thru
-SignaliudiL
Inleneciion
t,08 C(C)`.
"Suggested
Improvements""
Signalirstion
ER 1 Left, 1 Right
WB 1 Left
SR 1 Right
Pd‘
SITE `:a
karFIF
4 Old
Uasignalie d °wn R
Ialersection
C 1
Unsignalized
Intersection
Unsignalized
Intersection
Ho 'we /1 Road 4e
)(F)*
Rmulawa Ro
S g I edi "Suggested
Intersecdun Im pros emenli'
]QS =B(C)g Sigealiratinn
AM Peak Hour (PM Peak Hour)
Denotes Two -way Left turn lane
Denotes critical unsignalized movement
U is proffered by Stonbridge Development
*Funding for the improvement has yet to be determined
_pHRA
r Figure 5
2012 Background Lane Geometry and Levels of Service
A Traffic Lnvact Analysis of the Wmnpler Property
March II, 2008
Project Number 15291 -1 -2
Page 10
Intersection
Traffic
Control
Lane
Group
Approach
AM Peak Hour
PM Peak Hour
LOS
Back of
Queue
LOS
Back of
Queue
Route 11 Old Charlestown
Road
Signalized
WB/L
WB/R
E
B
257.0
83.0
E
B
329.0
62.0
WB LOS
C
D
NB/T
NB/TR
B
342.0
C
776.0
NB LOS
B
C
SB /L
SB/T
A
C
49.0
1053.0
F
B
303.0
860.0
SB LOS
C
C
Overall LOS
C
C
Route 11 Stephenson Road
Signalized
WB /LR
C
1 62.0
D
1 124.0
WE LOS
C
D
NB/TR
13 1 468.0
D 1 1478.0
NB LOS
B
D
SB/L
SB/T
A
A
25.0
234.0
F
A
89.0
62.0
SB LOS
A
B
Overall LOS
B
C
Route I 1 Hopewell
Rd /Brucetown Rd
Signalized
EB /L
EB /T
EB /R
E
D
B
151.0
79.0
110.0
F
D
B
391.0
57.0
125.0
EB LOS
C
D
WB /L
WB/ R
E
C
127.0
74.0
D
C
112.0
101.0
WB LOS
D
D
NB /l.
NB/TR
13
A
91.0
343.0
D
A
179.0
302.0
NB LOS
B
B
SB/L
SB/T
SB /R
B
C
A
63.0
490.0
37.0
F
C
A
195.0
542.0
70.0
SB LOS
C
C
Overall LOS
C
C
Table 3
Wampler Property
Levels of Service and Back of Queue (95 Results
2012 Background Conditions (w/ suggested improvements)
Assumed 25 feet Vehicle Length
Ell Eastbound, WB Westbound, NB Northbound, SB Southbound
L: Left, T:Thru, R: Right
A Traffic hnpact Analysis of the Wampler Property
March 11, 2008
Project Number 15291 -1 -2
Page 11
Code
Land Use
Amount
AM Peak Hour
PM Peak Hour
In Out Total
PM Peak Hour
ADT
Mini- Warehouse
37,635 SF
Total
3 2 6
3 2 6
In Out Total
In
Out Total
853
Conven, Martw \pumps
12 pumps
103 103 206
115
115 231
6,511
Total
103 103 206
115
115 231
6,511
Code
Land Use
Amount
AM Peak Hour
In Out Total
PM Peak Hour
In Out Total
ADT
151
Mini- Warehouse
37,635 SF
Total
3 2 6
3 2 6
5 4 9
5 4 9
89
89
TRIP GENERATION
The total trips produced by and attracted to Wampler Property site were established
using the 7 Edition of the Institute of Transportation Engineers' (ITE) Trip Generation
Report. Tables 4a and 4b are provided to summarizes the trip generation results for the
proposed Wampler Property development for Scenario 1 and Scenario 2, respectively.
Table 4a
Proposed Development: Wampler Property
Scenario 1: Trip Generation Summary
TRIP DISTRIBUTION AND TRIP ASSIGNMENT
PHR +A utilized the trip distribution percentages shown in Figures 6a and 6b to
assign the Wampler Property trips (Tables 4a and 4b) throughout the study area roadway
network. Figures 7a and 7b show the development- generated AM/PM peak hour trips and
ADT assignments for Scenario 1 and Scenario 2, respectively.
2012 BUILD -OUT CONDITIONS
The Wampler Property assigned trips (Figures 7a and 7b) were added to the 2012
background traffic volumes (Figure 4) to obtain 2012 build -out conditions. Figures 8a and
8b show the 2012 build -out ADT and AM /PM peak hour traffic volumes at key locations
throughout the study area for Scenario 1 and Scenario 2, respectively. Figures 9a and 9b
show the corresponding 2012 build -out lane geometry and AM /PM peak hour levels of
service. Tables 5a and 5b are provided to show the 95 percentile back of queue and
levels of service for each lane group during 2012 build -out conditions for Scenario 1 and
Scenario 2, respectively. All SYNCHRO levels of service worksheets are included in the
Appendix section of this report.
Table 4b
Proposed Development: Wampler Property
Scenario 2: Trip Generation Summary
A Traffic Impact Analysis of the Wampler Property
March 11, 2008
Project (Number- 15291 -1 -2
Page 12
1
Scenario 411: Trip Distribution Percentages
A Traffic Impact Analysis of the Wampler Property
March 11, 2008
Project Number 15291 -1 -2
Page 13
No Scale
-P
r Figure 6b
Scenario #2: Trip Distribution Percentages
A Traffic Impact Analysis of the Wampler Property
March 11, 2005
Project Number- 15291 -1 -2
Page 14
P f1..
r Figure 7a
AM Peak Hour(PM Peak Hour)
Datly Taps:!
Scenario 1: Development- Generated Trip Assignments
A Traffic Impact Analysis of the Wampler Property
March 11, 2008
Project Number 15291 -1 -2
Page 15
-PHI--A
r Figure 7b
Scenario 2: Development- Generated Trip Assignments
A Traffic Impact Analysis of the Wampler Property
March 11, 2008
Project Number- 15291 -1 -2
Page 16
—P
F Figure 8a
Scenario #1: 2010 Build -out Traffic Conditions
AM Peak Hour(PM Peak Hour)
gerage uakyjImps
A Traffic Impact Analysis of the Wormier Property
March 11, 2008
Project Number-15291-1-2
Page 17
-PHR--A
r Figure 8b
AM Peak Hour(PM Peak Hour)
rage)Dativ,Trtps',�',
Scenario #2: 2012 Build -out Traffic Conditions
A Traffic Impact Analysis of the Watnpler Property
March 11, 2008
Project Number- 15291 -1 -2
Page 18
No Scale
Sig
Intersection
OS CICO
!Signalized "Suggested
Intcrscetioli Improvements
L[)S Signallration
;r EB I Left, 1 Right
WR 1 Left
SR 1 Right
Signalized
Intersection
LOS =n(C)
"Suggested
Improvements
Signalizanan
NB -1 That
SITE
S
Unsignalized
Intersection
011/
It
to
ISi "Su
Inteiredio Impro euk"
♦em
LOS_A(C)c Signalvafion
/Unsignalized
Intersection
Unsignalized
Intersection
F(F j
*(FlP Brucetown Ro'ud
AM Peak Hour (PM Peak Hour)
Denotes Two -way Left turn lane
Denotes critical unsignalized movement
fit is proffered by Stonbridge Development
*Funding for the improvement has yet to be determined
P
F igure 9a Scenario #1: 2012 Build -out Lane Geometry and Levels of Service
,4 Traffic Impact Analysis of the Wimple, Property
March I I, 2008
Project Number 15291 -1 -2
Page 19
No Scale
P: ?Signalizedf
int cbn
11111.0S B(Cja
Suggested
Improvements
Sienalizabnn
NN -1 Thru
SITE
4
Unsignalized
Intersection
"Suggested
ImprovemenL itt
Signalizalion
U- 1 Left, 1 Right
WB 1 Len
SR 1 Right
Old
41 Unsignalized
Intersection
stgnyisea�
loiersecion'
Los "A(C
Unsignalized
Intersection
3 1. F (Fr
Bmectn W n Road
"Suggested
Improvements "W
Siena!Ration
AM Peak Hour (PM Peak Hour)
Denotes Two -way Left turn lane
Denotes critical unsignalized movement
�It is proffered by Stonbridge Development
*Funding for the improvement has yet to be determined
P
r Figure 9b Scenario #2: 2012 Build -out Lane Geometry and Levels of Service
A Traffic Impact Analysis of the Wampler Property
March 11, 2008
Project Number 15291 -1 -2
Page 20
Intersection
Traffic
Control
Lane
Croup/
Approach
AM Peak Hour
PM Peak Hour
LOS
Back of
Queue
LOS
Back of
Queue
Route 11 Old Charlestown
Road
Signalized
WB /L
WB /R
E
A
241.0
67.0
E
B
329.0
62.0
WB LOS
C
D
NB/T
NB/TR
B
263.0
D
912.0
NB LOS
B
D
SB /L
SB/T
B
C
41.0
901.0
F
A
275.0
539.0
SB LOS
C
C
Overall LOS
C
C
Old Charlestown Rd
Site Driveway
Signalized
EB /L
EB/R
D
B
67.0
38.0
E
C
90.0
47.0
EB LOS
C
D
NB/L
NB/T
A
B
38.0
469.0
A
C
25.0
1418.0
NB LOS
B
C
SB/TR
B 1 921.0
A 48.0
SB LOS
B
A
Overall LOS
B
C
Route 11 Stephenson Road
Signalized
WB /LR
C
1 56.0
D 1 145.0
WB LOS
C
D
NB/TR
A 1 120.0
D 1 1376.0
NB LOS
A
D
SB /L
SB/T
A
A
25.0
423.0
F
A
82.0
117,0
SB LOS
A
B
Overall LOS
A
C
Route 11 Hopewell
Rd/Brucetown Rd
Signalized
EB/L
EB/T
EB/R
E
D
C
147.0
77.0
186.0
F
D
B
391.0
57.0
177.0
EB LOS
C
D
WB/L
WB/TR
D
C
124.0
72.0
D
C
112.0
101.0
WB LOS
D
D
NB/L
NB/TR
B
A
124.0
308.0
E
A
256.0
300.0
NB LOS
A
C
SB/L
SB/T
SB /R
B
C
A
60.0
481.0
31.0
F
C
A
149.0
579.0
77.0
SB LOS
C
D
Overall LOS
C
D
Table 5a
Wampler Property
Levels of Service and Back of Queue (95 Results
Scenario 01: 20t2 Build -out Condition (w/ suggested improvements)
Assum d 25 feet Vehicle Length
EB Eastbound, WB Westbound, NB Northbound, SB Southbound
L: Left, T:Thru, R: Right
Minimum queue length is assumed to be 25 feet
A Traffic Impact Analysis of the Wampler Propertv
March 1 1, 2008
Project Number-15291-1-2
Page 21
Intersection
Traffic
Control
Lane
Group/
Approach
AM Peak Hour
PM Peak Hour
LOS
Back of
Queue
LOS
Back of
Queue
Route 11 Old Charlestown
Road
Signalized
WB/L
WB /R
E
A
259.0
62.0
E
B
329.0
62.0
WB LOS
C
D
NB/T
NB/TR
B
235.0
D
877.0
NB LOS
B
D
SB/L
SB/T
A
C
41.0
850.0
E
A
267.0
424.0
SB LOS
B
B
Overall LOS
B
C
Old Charlestown Rd
Site- Driveway
Unsignalizcd
EB/LR
C
25.0
D
25.0
NB /L
NB/T
B
25.0
C
25.0
SB/TR
Route 11 Stephenson Road
Signalized
WB /LR
C
54.0
D
119.0
WB LOS
C
D
NB/TR
B 661.0
D 755.0
NB LOS
B
D
SB/L
SB/T
A
A
27.0
416.0
F
A
89.0
78.0
SB LOS
A
B
Overall LOS
A
C
Route 1I Hopewell
Rd /Brucetown Rd
Signalized
EB/L
EB/T
EB /R
E
D
B
151.0
79.0
111.0
F
D
B
391.0
57.0
128.0
EB LOS
C
D
WB /L
WB/TR
E
C
127.0
74.0
D
C
112.0
101.0
WB LOS
D
D
NB /L
NB/TR
B
A
101.0
276.0
D
A
176.0
285,0
NB LOS
A
B
SB /L
SB/T
SB /R
B
C
A
63.0
490.0
37.0
F
C
A
196.0
542.0
70.0
SB LOS
C
C
Overall LOS
C
C
Table 5b
Wampler Property
Levels of Service and Back of Queue (95 Results
Scenario #2: 2012 Build -out Condition (w/ suggested improvements)
Assumed 25 feet Vehicle Length
EB Eastbound. W B Westbound, NB Northbound, SB Southbound
L: Left, T:Thru, R: Right
Minimum queue length is assumed to be 25 feet
A Traffic Impact Analysis of the Wampler Property
March I I, 2008
Project Number 15291 -1 -2
Page 22
CONCLUSION
Based upon Synchro analysis results, regional improvements will be required in
order to maintain satisfactory levels of service in the vicinity of the proposed Wampler
Property development. Assuming the improvements shown in Figures 9a and 9b for
Scenario 1 and Scenario 2, respectively; all the study area intersections, except the
intersection of US Route 11 /Hopewell Road /Brucetown Road during Scenario 1 and 2 and
the unsignalized intersection of Route 11 /Site -Drive during Scenario 2, will maintain
overall levels of service "C" or better during 2012 build -out conditions. The following
reiterates the off-site roadway improvements recommended for each of the study area
intersections during Scenario 1 and Scenario 2:
Route 11 /Old Charlestown Road: In order to achieve levels of service "C"
or better, this intersection will require a traffic signalization and an
additional northbound thru lane during 2012 build -out conditions for
Scenario 1 and Scenario 2.
Route 11 /Stephenson Road: In order to achieve levels of service "C" or
better, this intersection will require a traffic signalization during 2012 build
out conditions for Scenario 1 and Scenario 2.
Route 11/ Hopewell Road /Brucetown Road: In order to achieve levels of
service "D" or better, this intersection will require a traffic signalization, an
additional eastbound left and right turn- lanes, westbound left turn -lane, and
southbound right turn-lane during 2012 build -out conditions for Scenario 1
and Scenario 2.
The applicant will work with VDOT /County to accommodate pedestrian and bicycle
facilities adjacent to the site.
NOTE: Funding for the aforementioned improvements has yet to be determined.
A Traffic Impact Analysis of the Wampler Property
March 11, 2008
Project Number- 15291 -1 -2
Page 23
No Scale
WOODSIE COMMERCIAL CENTER
if
,Yb al E`�
CI CARI3ROOK
i
�j3 r "*w eU R ,`R`"'
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