HomeMy WebLinkAbout02-09 Traffic Impact AnalysisA Traffic Impact Analysis of
Bishop -Amari Parcels
(Route 11 /O1d Charlestown Road)
Located in:
Frederick County, Virginia
Prepared for:
Mr. Thomas Amari
285 Baggess Lane,
Winchester, VA 22603
Prepared by:
Patton Harris Rust Associates
End veers. Surveyors. Planners. Landscape Architects.
10212 Governor Lane Boulevard
'�-y
1 HR A Suiie 1007
1 1 J Williamsport, Maryland 21795
T 301.223.4010 F 301 .223.6831
October 15, 2008
OVERVIEW
Report Summary
Patton Harris Rust Associates (PHR +A) has prepared this document to present
the traffic impacts' associated with the proposed Bishop -Amari Parcels located along the
east side of Route 11 (Martinsburg Pike), north of Old Charlestown Road, in Frederick
County, Virginia. The proposed project is comprised of 15,000 square feet of specialty
retail, a 16 -pumps gas station with convenience mart and a 5,000 square foot high- turnover
restaurant. Access is to be provided via a right in /right out only site driveway located
along the east side of Route 11 and a full- access site driveway located along the north side
of Old Charlestown Road. The proposed development will be built -out over a single
transportation phase by the year 2010. Figure 1 is provided to illustrate the location of the
Bishop -Amari Parcels with respect to the surrounding roadway network.
Methodology
The scope of study provided in this report is based upon a scoping session with
Virginia Department of Transportation (VDOT)/Frederick County staff on March 13, 2007.
The traffic impacts accompanying Bishop -Amari Parcels 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 Bishop -Amari Parcels,
Distribution and assignment of the Bishop -Amari Parcels 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 Bishop -Amari Parcels
October 15, 2008
Project Number: 15256 -1 -0
Page 1
No Scale
r Figure 1
Vicinity Map: Bishop -Amari Parcels, in Frederick County, VA
A Traffic Impact Analysis of the Bishop -Amari Parcels
October 15. 2008
Project Number: 15256 -1 -0
Page 2
EXISTING CONDITIONS
PHR +A conducted AM and PM peak hour manual turning movement counts at the
intersection of US Route 11 /Old Charlestown Road. ADT (Average Daily Traffic) was
established along each of the study area roadway links using an assumed "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 Bishop -Milan Parcels
October 15, 2008
Project Number: 15256 -1 -0
Page 3
No Scale
-PHI--A
r Figure 2
Existing Traffic Conditions
AM Peak Hour (PM Peak Hour)
A Traffic Impact Analysis of the Bishop-Amari Parcels
October 15, 2008
Project Number: 15256
Page 4
No Scale
PHA
F E gure 3
AM Peak Hour (PM Peak Hour)
Denotes Two -way Left turn lane
Denotes critical unsignalized movement
Existing Lane Geometry and Levels of Service
,4 Traffic hnpact Analysis of the Bishop -An ari Parcels
October 15, 2008
Project Number: 15256 -1 -0
Page 5
Intersection
Traffic
Control
Lane
Group/
Approach
AM Peak Hour
PM Peak Hour
LOS
Back of
Queue
LOS
Back of
Queue
Route I I Old Charlestown
Road
Unsignalized
WB/LR
C
57.0
D
58.0
NB/TR
SB/L
SB/T
A
25.0
A
25.0
Table 1
Bishop -Amari Parcels (Route 11 /O1d Charlestown Road)
Levels of Service and Back of Queue (95 Results
Exi ting Conditions
Assum d 25 feet Vehicle Length
EB Eastbound, WB Westbound, NB Northbound, SB Southhound
L: Left, T:Thru, R: Right
Minimum queue length is assumed to be 25 feet
A Traffic Impact Analysis of the Bishop- Antari Parcels
October 15, 2008
Project Number: 15256 -1 -0
Page 6
2010 BACKGROUND CONDITIONS
PHR +A increased the existing traffic volumes (Figure 2) along Route 11 and Old
Charlestown Road using a growth rate of two percent (2 per year through Year 2010.
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 2010 "other
developments Figure A is provided in the Appendix section of the report to show the
location of each of the background developments.
Figure 4 shows the 2010 background ADT and AM/PM peak hour traffic volumes
at key locations throughout the study area roadway. Figure 5 shows the corresponding
2010 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 2010 background conditions.
A Traffic Impact Analysis of the Bishop -Amari Parcels
October 15. 2008
Project Number: 15256 -1 -0
Page 7
Code Land Use
Amount
In
AM Peak Hour
Out Total
In
PM Peak Hour
Out Total
ADl'
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 H -T Restaurant
5,000 SF
30
28
58
33
21
55
636
934 Fast Food w/ DT
4,500 SF
122
117
239
81
75
156
2,233
932 H -T Restaurant
4,800 SF
29
27
55
32
20
52
610
932 I-1-T Restaurant
5,500 SF
33
30
63
37
23
60
699
932 H -T Restaurant
7,200 SF
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 SE
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 Housing 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
Sempeles Property
130 Industrial Park
898,425 SF
459
101
559
154
580
734
5,204
820 Retail
73,500 SF
79
51
130
245
266
511
5,559
Total
538
152
689
399
846
1,245
10,763
North Stephenson (Omps Property)
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
140,000 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
Assumed Phase I build -out for Year 2010
Assumed 75% build-out for Year 2010
Table 2
2010 "Other" Developments
Trip Generation Summary
A Tragic Impact Analysis of the Bishop -Anmri Parcels
October 15, 2008
Project Number: 15256 -1 -0
Page 8
_pHRA
r Figure 4
No Scale
AM Peak Hour(PM Peak Hour)
A'vcrage!Uiil3 Tnps
P H R
2010 Background Traffic Conditions
A Traffic Impact Analysis of the Bishop- Alnari Parcels
October 15, 2008
Project Number: 15256 -1 -0
Page 9
r i H
Figure 5
`SIgnIi ed'
Infeireetlnn
IAS =66
Proffered (by others
Improvements"
Signsliraxon
WH. Nil 1 Night
"Non- Proffered
Suggested
Improvement:"
Nx -1 Thru
AM Peak Hour (PM Peak Hour)
Denotes Two -way Left turn lane
Denotes critical unsignalized movement
2010 Background Lane Geometry and Levels of Service
A Traffic Impact Analysis of the Bishop- Atnarl Parcels
October 15, 2008
Project Number: 15256 -1 -0
Page 10
Intersection
Traffic
Control
Lane
Group/
Approach
AM Peak Hour
PM Peak Hour
LOS
Back of
Queue
LOS
Back of
Queue
Route I I Old Charlestown
Road
Signalized
WB /L
WB /R
E
A
324.0
71.0
D
A
212.0
48.0
WB LOS
D
C
NB/T
NB/T
NB /R
B
A
146.0
25.0
C
A
521.0
48.0
NB LOS
B
C
SB /L
SB/T
A
D
41.0
957.0
D
B
239,0
482.0
SB LOS
C
C
Overall LOS
C
C
Table 3
Bishop -Amari Parcels (Route 11 /Old Charlestown Road)
Levels of Service and Back of Queue (95 Results
2010 Background Conditions (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 Bishop -Amari Parcels
October 15, 2008
Project Number: 15256 -1 -0
Page 11
Code
Land Use
Amount
In
AM Peak Hour
Out Total
In
PM Peak Hour
Out Total
ADT
814
Specialty Retail
15,000 SF
31
20
50
25
32
57
679
853
Conven. Mart w \pumps
16 pumps
137
137
275
154
154
308
8,682
932
H -T Restaurant
5.000 SF
30
28
58
33
21
55
636
Sub -total
198
185
382
212
207
420
9,997
40% Pass-by (Code 853)
55
55
110
62
62
123
3,473
Total "New" Trips
143
130
273
151
146
297
6,524
TRIP GENERATION
The total trips produced by and attracted to the site were established using the 7
Edition of the Institute of Transportation Engineers' (ITE) Trip Generation Report. Table
4 is provided to summarizes the trip generation results for the proposed Bishop -Amari
Parcels development.
Table 4
Proposed Development: Bishop -Amari Parcels (Route 11 /OId Charlestown Road)
Trip Generation Summary
TRIP DISTRIBUTION AND TRIP ASSIGNMENT
PHR +A utilized the trip distribution percentages shown in Figure 6 to assign the
Bishop -Amari Parcels trips (Table 4) throughout the study area roadway network. Figure
7 show the corresponding development- generated AM/PM peak hour trips and ADT
assignments.
2010 BUILD -OUT CONDITIONS
The Bishop -Amari Parcels assigned trips (Figure 7) were added to the 2010
background traffic volumes (Figure 4) to obtain 2010 build -out conditions. Figure 8 show
the 2010 build -out ADT and AM /PM peak hour traffic volumes at key locations
throughout the study area roadway network. Figure 9 show the corresponding 2010 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
2010 build -out conditions to achieve the recommended levels of service "C" and "D
respectively. All SYNCHRO levels of service worksheets are included in the Appendix
section of this report.
A Traffic Impact Analysis of the Bishop- Antari Parcels
October 15, 2008
Project Number: 15256 -1 -0
Page 12
P
Trip Distribution Percentages
A Traffic Impact Analysis of the Hishop-Aniari Parcels
October 15, 2008
Project Number: 15256 -1 -0
Page 13
r Figure 7
No Scale
AM Peak Hour(PM Peak Hour)
Average'!DailykTrips
Development- Generated Trip Assignments
A Traffic Impact Analysis of the Bishop -Amari Parcels
October 15, 2008
Project Number: 15256 -1 -0
Page 14
No Scale
pHRA
r Figure 8
2010 Build -out Traffic Conditions
AM Peak Hour(PM Peak Hour)
�`Avtirase I)aly�T�ips,
A Traffic Impact Analysis of the Bishop -Anmri Parcels
October 15, 2008
Project Number: 15256 -1 -0
Page 15
r Figure 9
No Scale
Signalized
Intersection
yoS�c(cF,
"Non- Proffered
Suggested
Improvements
NB -1 Thru
WN 1 heft
diachie∎re OS't>'
d t iN 3 i t
Signhliz di:'
Inlersectiion
LOS )(rh
Pro fared (by others
Improvements'
Signalization
VII, Na• 1 Right
Signalized:.
Inlersecdon
LOS=C(U):
"Non- Proffered
Suggested
Improvements"
NB -1 Thru
o ;achieve _G
AESNAZIOW
Unsignalized
Intersection
°0 r
SITE
y Unsignalized
Intersection
AM Peak Hour (PM Peak Hour)
Denotes Two -way Left turn lane
Denotes Turn-lane per VDOT requirement
Denotes critical unsignalized movement
2010 Build -out Lane Geometry and Levels of Service
A Traffic Impact Analysis of the Bishop -Amari Parcels
October 15, 2008
Project Number: 15256 -1 -0
Page 16
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
(For LOS "C
WB /L
WB/L
WB /R
D
A
187.0
70.0
D
A
146.0
52.0
WB LOS
C
C
NB/T
NB/T
NB/R
A
A
133.0
25.0
D
A
563.0
71.0
NB LOS
A
C
SB/L
SB/T
B
C
152.0
1172.0
D
B
328.0
364.0
SB LOS
C
C
Overall LOS
C
C
Old Charlestown Rd Site-
Drive #1
Unsignalized
EB/LT
A
25.0
A
25.0
WB/TR
SB /LR
B
25.0
B
25.0
Route 11 Site -Drive #2
Unsignalized
Right In/Out
WB /R
NB/T
NB/R
SB/T
Table 5a
Bishop -Amari Parcels (Route 11 /Old Charlestown Road)
Level of Service and Back of Queue (95 Results
2010 Build -out Conditions (w/ suggested improvements for recommended LOS 'C')
Assumed 25 feet Vehicle Length
EB Eastbound, WB Westbound, NB Non bound, SB Southbound
L: Left, T:Thru, R: Right
Minimum queue length is assumed to be 25 feet
A Traffic Impact Analysis of the Bishop- Arnari Parcels
October 15, 2008
Project Number: 15256 -1 -0
Page 17
Intersection
Traffic Control
Lane
Group/
Approach
AM Peak Hour
PM Peak Hour
LOS
Back of
Queue
LOS
Back of
Queue
Route I I Old Charlestown
Road
Signalized
(For LOS "D
WB /L
WB /R
F
A
500.0
68.0
E
B
377.0
92.0
WB LOS
D
D
NB/T
NB/T
NB/R
A
A
143.0
25.0
E
A
587.0
72.0
NB LOS
A
D
SB /L
SB/T
B
D
169.0
1216.0
E
B
351.0
427.0
SB LOS
D
C
Overall LOS
C
D
Old Charlestown Rd Site-
Drive 1
Unsignalized
EB /LT
A
25.0
A
25.0
WB/TR
SB /LR
B
25.0
B
25.0
Route 11 Site -Drive #2
Unsignalized
Right In/Out
WB /R
NB/T
NB/R
SB/T
Table 5b
Bishop -Amari Parcels (Route 11 /Old Charlestown Road)
Levels of Service and Back of Queue (95 Results
2010 Build -out Conditions (w/ suggested improvements for recommended LOS 'D')
Assumed 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 Bishop- Arnari Parcels
October 15, 2008
Project Number: 15256 -1 -0
Page 18
TURN -LANE WARRANT ANALYSIS
In order to determine the right -turn lane requirement along Route 11 during future
(2010) traffic conditions at the study area intersections, right -turn lane warrant analyses
was completed as per "VDOT Road Design Manual: Guideline for Right Turn Treatment".
Accordingly, a northbound right -turn lane will be warranted along Route 11 at the
intersection of Route I I/Site-Driveway #2 during 2010 build -out conditions. The
aforementioned reference is provided in the Appendix section of this report.
Existing Proposed Development Traffic Conditions
For informational purposes, PHR +A has provided analysis for the existing
proposed development generated traffic conditions to observe the traffic impacts of the
proposed development on the study area network. Based upon Synchro analysis results,
assuming the proffered (by others) improvements, all the study area intersections will
maintain overall levels of service "B" or better. Figure B is provided in the Appendix
section of the report to show the ADT and AM/PM peak hour traffic volumes. Figure.0
shows the corresponding existing proposed development AM/PM peak hour levels of
service in the Appendix section of the report.
The following reiterates the off -site roadway improvements recommended for each
of the study area intersections:
Route 11 /OId Charlestown Road: In order to achieve levels of service "C" or
better, this intersection will require traffic signalization, a northbound right -turn
lane and a westbound right -turn lane during 2010 build -out conditions. All of
the aforementioned improvements are proffered by others at this intersection.
A Traffic 6npact Analysis of the Bishop -Amari Parcels
October 15, 2008
Project Number: 15256 -1 -0
Page 19
CONCLUSION
Based upon Synchro analysis results, assuming the proffered improvements (by
others) as well as non proffered improvements (suggested) shown in Figure 9; all the study
area intersections will maintain levels of service "C" or better during 2010 build -out
conditions. The following describes the off -site roadway improvements recommended for
the intersection of Route I 1 /Old Charlestown Road:
Proffered Improvements (by others):
signalization
one westbound right -turn lane
one northbound right -turn lane
In addition to the aforementioned proffered improvements, the following non proffered
improvements are suggested at the intersection of Route 1 1/Old Charlestown Road to
maintain levels of service "D" and "C respectively.
Non Proffered (Suggested) Improvements (to achieve LOS "D
one northbound through lane
Non Proffered (Suggested) Improvements (to achieve LOS "C
one westbound left -turn lane
NOTE: Funding source for the aforementioned non proffered improvements have yet to be
identified.
The bicycle facility is planned for the west side of Route 11 and will not be
accommodated adjacent to the site. However, the Proffer Statement provides a monetary
contribution towards improvements associated with the Hopewell Road and Brucetown
Road realignment.
A Traffic Impact Analysis of the Bishop -Amari Parcels
October 15, 2008
Project Number: 15256 -1 -0
Page 20