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Traffic and Civii'Ak Inc.
181 East 50'h St. Garden City, ID 83714
LETTER OF TRANSMITTAL (208)484-4410
thomp-cvnengfneers@cableone.net
March 28, 2017
TO: Mindy Wallace
ACHD Development Services
3775 Adams street
Garden City, ID 83714
RE: Pine 43 Subdivision
Meridian, ID
VIA: Hand Delivery
Transmitted herewith, please find enclosed:
I copy of the revised Traffic Impact Study
The enclosed report is for your review and comment. We have included the revised internal capture
calculations using the current standard. This resulted in a revised trip generation table, and minor
adjustments to the intersection calculations.
We have addressed compliance with access policy on internal roads on page 22.
Should you have any questions, please call.
Daniel A. Thompson, P.E.
Cc
Thompson Engineers
Traffic and Civil lne.
Table of Contents
Traffic Impact Study
Pine 43, Meridian, Idaho
EXECUTIVE SUMMARY
1
.
Introduction.....................
..................................
l
ProposedDevelopment.............................................................................................................................
I
StudyArea..............................................................................................................................................•.
l
Conclusions
...........
l
INTRODUCTION........................................................................................
3
PROPOSED DEVELOPMENT
...................
STUDY AREA CONDITIONS
4
..... 5
StudyArea................................................................................................................................................
5
LandUse..................................................................................... ...........................
5
STUDY PERIOD........... 5
BuildOut Year....................................................................................... 5
HorizonYear......................................................................................................................................... 5
EXISTING CONDITIONS........... 5
RoadSystem.............................................................................................................................................5
TrafficVolumes.............................................................................. 6
OffSite Traffic.............................................................................. 6
DailyTraffic..........................................•----..--.----•.......................---------....................................................7
SystemImprovements..............................................................................................................................
8
AccidentAnalysis........................................................................•.................................------.....................
8
PROJECTED TRAFFIC............................•--•--.......................................
9
BackgroundTraffic...................................................................................................................................9
TripGeneration.......................................................................................................................................12
TripDistribution..........................................................................................................•--........................13
SiteTraffic..............................................................................................................................................14
TotalTraffic..........................•.............................................---.................................................................
16
TRAFFICANALYSIS...............................................................................................................................17
Capacity Analysis and Level of Service.................................................................................................17
IntersectionAnalysis..............................................................................................................................20
SignalWarrant Analysis.........................................................................................................................20
SiteAccess..............................................................................................................................................21
RoadwayAnalysis.....................................•............................................................................................21
SiteCirculation......................................................................................---......................
Tnrn I anac
nc
Thompson Engineers
rrafc and Civil
Inc.
List of Figures
Traffic Impact Study
Pine 43, Meridian, Idaho
Figure1 - Project Location...........................•...............................................................................................3
Figure2 - Preliminary Site Plan....................................................................................................................4
Figure 3 - Existing AM Peak Hour Conditions............................................................................................. 6
Figure 4 - Existing PM Peak Hour Conditions............................................................................................. 7
Figure 5 - Build Out Year AM Peak Hour Background Traffic.................................................................10
Figure 6 - Build Out Year PM Peak Hour Background Traffic.................................................................. I I
Figure 7 - Trip Distribution .................. ..13
Figure 8 - AM Peak Hour Site Traffic........................................................................................................14
Figure 9 - PM Peak Hour Site Traffic....................................................................... ............................. is
Figure 10 - Build Out Year Total AM Peak Hour Traffic..........................................................................16
Figure 11 - Build Out Year Total PM Peak Hour Traffic...........................................................................17
Figure 12 - Internal Intersection AM Peak Hour........................................................................................ 23
Figure 13 - Internal Intersections PM Peak Hour...........................................................................I........... 24
Figure 14 - Internal Intersection Spacing....................................................................................................25
Figure 15- Right -Turn Lane Guidelines for Four Lane Roadways.............................................................26
List of Tables
Table1 - Daily Traffic..................................................................................................................................7
Table 2 - Accident Summary Fairview Near Hickory 2011-2015................................................................ 8
Table 3 - Accident Summary fine and Webb 2011-2015............................................................................8
Table 4 - Accident Summary Locust Grove and Pine Avenue 2011-2015.................................................. 9
Table 5 - Accident Summary Locust Grove Near Fairview 2011-2015......................................................9
Table6 - Trip Generation............................................................................•.............................................. 12
Table 7 - AM Peak Hour Intersection Summary........................................................................................18
Table 8 - PM Peak Hour Intersection Analysis Summary..........................................................................19
Table9- Signal Warrant Analysis............................................................................................................•..20
Table 10 - Roadway Segment Analysis......................................................................................................21
Table11 - Right Turn Lane Data................................................................................................................ 26
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Thompson Engineers
Traft and Civil Inc.
EXECUTIVE SUMMARY
Introduction
Traffic Impact Study
Pine 43, Meridian, Idaho
Thompson Engineers, Inc. has been retained to update a traffic impact study for the
proposed Pine 43 development in Meridian, Idaho. The project is located south of
Fairview Avenue, north of Pine Avenue, and north of Locust Grove Road, approximately
as shown in Figure 1. This report is an update of a traffic study originally prepared and
approved in 2007. The overall development was also approved in 2007. The traffic study
is being updated because the developer is proposing land use changes from the approved
development plan.
Proposed Development
The original project consisted of 550,000 SF of commercial space, 1,800,000 SF of
Office Park, and 850 townhomes. It was estimated to generate 37,270 trips per day, with
3,880 occurring in the PM peak hour. Part of this project has been constructed. This is
the Scentsy headquarters.
This development consists of 229 single family dwellings, 480 apartments, 108
townhomes, 96,000 SF of retail space and 417,000 SF of office space. Based on the trip
generation methods recommended in the Trip Generation Manual, the site will generate
3,199 new trips per day, of which 1038 trips will occur during the AM peak hour and
1,325 trips will occur during the PM peak hour. A preliminary site plan is shown in
Figure 2.
The site is expected to access the transportation system primarily via Pine Avenue,
Locust Grove Road, and Fairview Avenue. This project will construct two new collector
roads; Webb Avenue and State Avenue.
Study Area
The area of influence is anticipated to be Ada County, Idaho, including the City of
Meridian. The primary impacts will be along Fairview Avenue, Pine Avenue and Locust
Grove Road. The study area will include the intersections of:
■ Fairview Avenue and Hickory Avenue
■ Locust Grove Road and the extension of State Avenue
■ Locust Grove Road and Pine Avenue
■ Pine Avenue and Webb Avenue
■ Fairview Avenue and the extension of Webb Avenue
■ Locust Grove Road and Wilson Road
Conclusions
Below are the findings of this report:
■ The proposed development will generate less traffic than the currently approved
development plan.
Thompson Engineers Traffic Impact Study
Traffic and CAIR Inc. Pine 43, Meridian, Idaho
■ The large number of housing units within the development provides opportunities
for trips to be captured internally.
i This project will construct a north -south collector road (Webb Avenue) and an east -
west collector road (State Avenue) that are included in the COMPASS network.
■ The Idaho department of Transportation is currently widening Eagle Road which
will add additional capacity to the transportation system.
■ The Ada County Highway District has programmed the widening of Fairview
Avenue to seven lanes. This will add capacity to the transportation system.
■ The intersection of Fairview Avenue and Hickory Avenue will operate at an
acceptable level of service under background and total traffic conditions in the build
out year. The critical peak hour is in the PM peak hour.
■ The intersection of Pine Avenue and Locust Grove will operate at a poor level of
service under background and total traffic conditions in the build out year, and the
volume to capacity ratio will exceed the maximum allowable per ACHD policy.
Installing a westbound left turn lane and a northbound right turn lane will improve
the level of service on critical approaches and lower the volume to capacity ratio.
The critical peak hour is in the PM peak hour. The developer does not control the
right-of-way at this intersection. Improvements to Fairview Avenue and Eagle Road
will provide additional capacity to the system and will relieve some demand on this
intersection.
■ The intersection of Pine Avenue and Webb Avenue will operate at an acceptable
level of service under background and total traffic conditions in the build out year.
The critical peak hour is in the PM peak hour.
■ The intersection of Fairview Avenue and Webb Avenue will operate at an
acceptable level of service under background and total traffic conditions in the build
out year. The critical peak hour is in the PM peak hour.
■ The intersection of Locust Grove Road and State Avenue will operate at an LOS E
under background and total traffic conditions in the build out year. A signal is not
warranted. The critical peak hour is in the PM peak hour. If the intersection of
Locust Grove Road and Pine Avenue is improved or has a decrease in demand,
traffic from State Avenue will be diverted to this intersection.
■ The intersection of Locust Grove and Wilson Road will operate at LOS F under total
traffic conditions in the build out year. The critical peak hour is in the PM peak
hour. This project will provide an opportunity for traffic at this intersection to
access an alternative connection to the transportation system.
i Locust Grove Road is expected to operate at better than LOS E in the build out year
based on the ACHD policy for major arterial roads. The road was widened in 2013.
■ Pine Avenue is expected to operate at better than LOS E in the build out year based
on the ACHD policy for minor arterial roads. The road was widened in 2013.
■ Hickory Avenue is expected to operate at better than LOS D in the build out year
traffic conditions based on the ACHD policy for collector roads.
t The proposed site plan provides good circulation and good connectivity to other
developments.
19 A right turn lane is warranted on Locust Grove Road at State Avenue.
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Thompson Engineers
Traffic aril cp Inc.
INTRODUCTION
Traffic Impact Study
Pine 43, Meridian, Idaho
Thompson Engineers, Inc. has been retained to update a traffic impact study for the
proposed Pine 43 development in Meridian, Idaho. The original project was approved in
2007 and the original traffic impact study for the project was prepared by Dobie
Engineering, Inc. The project is located between Pine Street and Fairview Avenue, and
Locust Grove Road and Hickory Lane, approximately as shown in Figure 1. The
purpose of this study is to evaluate the potential traffic impacts resulting from the project
and make recommendations for mitigation of those impacts. In particular, the scope of
the study includes the following:
■ Trip generation of the proposed development
■ Trip distribution and traffic assignment of the site generated traffic
■ The capacity of the transportation system to support the development
■ Intersection treatment of the site access points
Figure I - Project Location
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Thompson Engineers Pine 43, Meridian, Idaho
Traffic and Civii Inc. Traffic Impact Study
PROPOSED DEVELOPMENT
The project is a mixed use development on approximately 44.62 acres. The development
includes 229 single family dwellings, 108 attached houses, 480 apartments, and 513,00
SF of office and retail space. The preliminary plat was not finalized at the time of this
report. A preliminary site plan is shown in Figure 2.
Figure 2 - Prelimin ary Site Plan
�L it
-
Retail HNH1iM
uUJ.uul Wl.L
i - un r -i
i. �I. i�y3
Townhomes
r�
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t Office
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Thompson Engineers
Traffic and Civil Inc.
Traffic Impact Study
Pine 43, Meridian, Idaho
The original plan included 550,000 SF of retail and commercial space, a 1,800,000 SF
office park, and 850 residential town homes. The original plan included approximately 40
acres west of Hickory Avenue and south of Pine Avenue. This area is built out. It is not
clear how much of the original plan is built out.
The site is expected to access the transportation system primarily via Pine Avenue,
Locust Grove Road, and Fairview Avenue. The site will also have access to Hickory
Avenue.
STUDY AREA CONDITIONS
Study Area
The area of influence is anticipated to be Ada County, Idaho, including the City of
Meridian. The primary impacts will be along Pine Avenue, Locust Grove Road, and
Fairview Avenue. The study area will include the intersections of Locust Grove and Pine
Avenue, Locust Grove Road and State Avenue, Pine Avenue and Webb Avenue, and
Fairview Avenue and Hickory Avenue.
Land Use
The site is within the Meridian City Limits and is currently vacant. It is currently zoned
MU by the City of Meridian.
STUDY PERIOD
Build Out Year
The Build out Year for this project is assumed to be 2025 to correspond with COMPASS
data and other development. The actual build out of the site will depend on market
conditions and project implementation.
Horizon Year
2030 was selected as the horizon year, in accordance with the requirements of the Ada
County Highway District.
EXISTING CONDITIONS
Road System
Fairview Avenue is classified as a minor arterial road by ACHD. In the vicinity of this
project, it has two lanes in each direction, a center left turn lane, curb, gutter and
sidewalk. East of the site there are three lanes in the east direction. Lanes are
approximately 12 feet wide. There is a posted speed of 40 MPH in front of the project.
Pine Avenue is classified as a minor arterial road by ACHD. In the vicinity of this
project, it has two through lane in each direction, a center left turn lane, curb gutter and
sidewalk. Lanes are approximately 12 feet wide. There is no curb and gutter on either
side of the roadway. It has a posted speed of 30 MPH in the vicinity of the project.
Locust Grove Road is classified as an arterial road by ACHD. In the vicinity of this
project, it has two through lanes in each direction, and a center turn lane. Lanes are
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Thompson Engineers
Traffic and CM/ Inc.
Traffic Impact Study
Pine 43, Meridian, Idaho
approximately 12 feet wide. It has curb, gutter and sidewalk on both sides of the
roadway. It has a posted speed of 35 MPH in front of the project.
Hickory Avenue is classified as a collector road by ACHD. In the vicinity of this project,
is has one lane in each direction with 39 feet of pavement. It has curb, gutter and
sidewalk. It has a posted speed of 25 MPH.
Traffic Volumes
AM and PM Traffic counts were obtained at the intersections in the study area in October
of 2016 by L2 Data Collection. Existing AM Peak Hour traffic volumes are shown in
Figure 3. Existing PM Peak Hour traffic volumes are shown in Figure 4.
Off Site Traffic
Based on information provided, no significant off site development is projected.
Figure 3 - Existing AM Peak Hour Conditions
26 47 117
20 Z t'40
107 41
ti
22 5 32
J
14
0
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292
124
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Er C�mrnercia] f
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Thompson Engineers
Traffic and MY Inc.
Figure 4 - Existing PM Peak Hour Conditions
74
12;
7e
Daily Traffic
Traffic Impact Study
Pine 43, Meridian, Idaho
l� 17 60 '�-128
1439 957 <�=1262
�0 41 � 2g
0 a ,a AO
'
Daily counts on were obtained by L2 Data Collection and are shown in Table 1.
Table I - Daily Traffic
Roadway Segment
Location
Daily
Direction
Peak
Count
Date
Volume
Hour
Locust Grove
North of Pine
23,585
EB
AM
1147
10/20/16
WB
PM
1150
10/20/16
Pine Avenue
East of Locust
10
EB
AM
777
10/20/16
WB
PM
750
10/20/16
Grove
,155
Hickory Ave
South of Jewell
2,928
SB
AM
182
10/20/16
NB
PM
197
10/20/16
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Thompson Engineers
Traffic and Civil Inc.
System Improvements
Traffic Impact Study
Pine 42, Meridian, Idaho
ITD is currently widening Eagle Road to seven lanes. This improvement could impact
travel patterns on Pine Avenue and Locust Grove Road.
There are no projects in the ACHD Five Year Capital Improvement Plan that would add
capacity to the transportation system or change traffic patterns in the study area of this
project.
The 20 Year Capital Improvement Plan includes reconstruction of Fairview Avenue to
seven lanes in the 2017-2022 planning period. This improvement will add capacity to the
system and could impact travel patterns on Pine Avenue and Locust Grove Road.
The 20 Year Capital Improvement Plan includes reconstruction of Pine Avenue to three
lanes in the 2023-2027 planning period. This improvement will provide additional
capacity to Pine Avenue.
Accident Analysis
Accident data for Fairview Avenue and Hickory Avenue in the vicinity of the project for
the years 2011 through 2015 was obtained from the LHATC. The full report is included
in the appendix of this report. The accidents can be summarized as follows:
Table 2 - Accident Summary Fairview Near Hickory 2011-2015
Fatal Accidents
0
Injury Accidents
I 1
Property Damage Accidents
I2
Total Accidents
23
Single Vehicle Accidents
0
Multi Vehicle Accidents
23
Thirteen of the accidents were intersection related at Hickory Avenue. Ten were
identified as non intersection related. The contributing factors to these accidents were
inattention, following too close, and distracted driving. Roadway conditions were not
considered contributing causes.
Accident data for Pine Avenue and Webb Avenue in the vicinity of the project for the
years 2011 through 2015 was obtained from the LHATC. The full report is included in
the appendix of this report. The accidents can be summarized as follows:
Table 3 - Accident Summary Pine and Webb 2011-2015
Fatal Accidents
0
Injury Accidents
6
Property Damage Accidents
7
Total Accidents
13
Single Vehicle Accidents
5
Multi Vehicle Accidents
8
Nine of the accidents were intersection related at Webb. Four were identified as non
intersection related. The contributing factors to these accidents were inattention,
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Thompson engineers Traffic Impact Study
Pine 43, Meridian, Idaho
Traffic and CMI Inc.
following too close, and distracted driving. Roadway conditions were not considered
contributing causes.
Accident data for Locust Grove Road and Pine Avenue in the vicinity of the project for
the years 2011 through 2015 was obtained from the LHATC. The full report is included
in the appendix of this report. The accidents can be summarized as follows:
Table 4 - Accident Summary Locust Grove and Pine Avenue 2011-2015
Fatal Accidents
0
brijury Accidents
14
Property Dama a Accidents
14
Total Accidents
28
Single Vehicle Accidents
0
Multi Vehicle Accidents
23
Twenty-seven of the accidents were intersection related at Pine Avenue. One was
identified as none intersection related. The contributing factors to these accidents were
inattention, following too close, and distracted driving. Roadway conditions were not
considered contributing causes.
Accident data for Locust Grove Road south of Fairview in the vicinity of the project for
the years 2011 through 2015 was obtained from the LHATC. The full report is included
in the appendix of this report. The accidents can be summarized as follows:
Table 5 - Accident Summary Locust Grove Near Fairview 2011-2015
Fatal Accidents
0
Injury Accidents
15
Property Damage Accidents
12
Total Accidents
27
Single Vehicle Accidents
0
Multi Vehicle Accidents
27
Twenty-one of the accidents were intersection related with most of them at Wilson Lane.
Six were identified as non intersection related. The contributing factors to these accidents
were inattention, following too close, and distracted driving. Roadway conditions were
not considered contributing causes.
PROJECTED TRAFFIC
Background Traffic
Future traffic is obtained by expanding the existing traffic volumes by a growth factor
of 2.0% per year using the same growth rate as in the original report. Background AM
Peak Hour traffic for the build out year is shown in Figure 5. Background PM Peak
Hour traffic for the build out year is shown in Figure G.
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Thompson Engineers Traffic Impact Study
Traffic andcivir rnc.
Pine 43, Meridian, Idaho
Figure 5 - Build Out Year AM Peak Hour Background Traffic
120 7�If11y9 206 10 0 4
147 �4 Q � 94 8 / A � l� 20
949 464 1318 789
338 298 0 0
4 1349 0
17 Z 0
17 0
6 813 0
78 1D50 168
63 48
349 81
140 fy 146
33 56
24
1312 ^
128
140
48
J 760
�49
39
LE Commercial Ct
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Thompson Engineers
Traffic and Civil Inc.
Traffic Impact Study
Pine 43, Meridian, Idaho
Figure 6 - Build Out Year PM Peak Hour Background Traffre
10 0 9 65 11 96
8 e � , 20 72 d 153
1261 E=�> � 1720 11" 1508
93
152
88 [
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Thompson Engineers
Traffic and Civil lnc.
Trip Generation
Traffic Impact Study
Pine 43, Meridian, Idaho
In the absence of site -specific data, site trip generation is estimated using the procedures
recommended in the latest edition of the Trip Generation Manual (9`h edition) published
by the Institute of Transportation Engineers. Site trip generation is obtained by applying
the average trip generation rates obtained from the Manual for each category of land use
within the development. Table 6 shows the trip generation of the site. Pass by rates are
estimated from data published by the Institute of Transportation Engineers.
Table 6 - Trip Generation
Summary of Trip Generation
Average Weekday Driveway Volumes
ITE
Code
Land Use
No.
Units
24 hr 2-Way
Capture
Total
Rate
Total
Rate
Num
210
Dwellings
Single Familyr4l
DU
9.52
2180
2/a
44
2136
220
Apartnent
ou
6.65
3192
2%
64
3128
230
TownHouses
DU
5.81
627
2%
13
614
826
Specialty
Retail
TSF
44.32
4255
10%
426
3629
710
GeneralOficeTSF
11.03
4600
15%
690
391u
Total
14,854
13,617
Average Weekday AM Peak Hour Driveway Volumes
ITE
Land Use
No.
Units
Enter
Capture
Enter
Exit
Capture
Exit
Code
Rate Tota
Rate Num
Total
Total
Total
Rate
Tots!
Rate
Num
210
Single Family
Dwellings
229
DU
0.19
44
21°
1
43
0.56
128
4%
5
123
166
220
Aparment
480
DU
010
49
4%
2
47
0.41
196
3%
6
190
237
230
TownHouses
108
DU
0.07
8
2%
0
8
0.37
39
2%
1
38
46
826
Specialty
Retail
96
TSF
0.60
57
35%
20
37
0.36
35
35%
12
23
60
710
General Office
417
TSF
1.37
572
3%
17
555
0.19
78
23%
18
60
615
Total
730
690 11
476
434 1
1124
Average Weekday PM Peak Flour Driveway Volumes
ITE
Code
Land Use
No.
Units
ter
Total
Capture
Rate Num
Enter
Totalr0�25
Exit
Capture
Exit
Total
Total
Total
Rate
Num
210
Single Family
Dwellin s
229
DU
rRate
172
7%
12
160
57
9%
5
52
212
220
Apartment
480
DU
193
7%
14
179
104
9%
9
95
274
230
TownHouses
108
DU
0.35
38
8%
3
35
0.17
19
9%
2
17
52
826
Specialty Retail
96
TSF
1.19
114
15%
17
97
1.52
146
25%
36
146
243
710
General Office
417
TSF
0.25
106
10%
11
95
1.24
516
3%
17
499
594
Total
1 623
=PA9_
Roo
1975
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Thompson Engineers
Traffic and Civil Inc.
Trip Distribution
Traffic Impact Study
Pine 43, Meridian, Idaho
In order to determine impacts, the trips generated by the site must be distributed to
destinations throughout Ada County and assigned to the transportation system. Based on
current travel patterns, the modal split is negligible, so all trips are assigned to vehicles,
and the vehicles are assigned to the roadway system. The distribution for this
development is based on information obtained from the original traffic study, COMPASS
and current travel patterns. The site trip distribution for the development is shown in
Figure 7.
Figure 7 - Trip Distrihution
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Thompson Engineers
Traffic and civil Ins
Site Traffic
Traffic Impact Study
Pine 43, Meridian, Idaho
Site traffic is distributed at the study intersection in accordance with the distribution from
Figure 7. Figure 8 shows the distribution of site generated traffic for AM peak hour
traffic conditions. Figure 9 shows the distribution of site generated traffic for PM peak
hour conditions.
Figure 8 - AM Peak Hour Site Traffic
D zns 10 o 0 D � �
0����D D� l�0
80 � � 0 SO ff � SO
50 30 D W 0 60 0 0 7i8
-
105 0 , R�Ua
0
so 0
f
0 30 75
D 15 25 4i
15 30 30
0 15
o� �50
12
0.25 9Df
M afi 1D lE
.0) 20
'25
o�l km,
0 10
44 �2D
IF30
10 0 10
20
0 77
, a77
15 5 16
10 a 15
2D
.30
20
45
17 0 10
ErMmer ial Q1--
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Thompson Engineers
Traffic and Civil 1".
Figure 9 - PM Peak Hour Site Traffic
Traffic Impact Study
Pine 43, Meridian, Idaho
' 0 a I r
t I
l go
e�"� ire ,105 '10
55
r,
130
I
�► �►
10 55 35
R�
n �I<
a 85
D 55 30
't`f' l3i
p v7
2
jr !
I �f1
otVAw
40
61
20
3D
D sD
I
30 0 D D
4410J
�I0 = 18 D 6
1D� �
aW5
10
60 1D 55
10 30
t325
6
u
.. 20 0 _30
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Thompson Engineers
Traffic and Civil 1"
Total Traffic
Traffic Impact Study
Pine 43, Meridian, Idaho
The site traffic is then added to the background traffic as determined above. Figure 10
shows the total traffic at each intersection for AM peak hour conditions. Figure 11
shows the total traffic at each intersection for PM peak hour.
Figure 10 - Build Out Year Total AM Peak Hour Traffic
�� �26 2,� a1L48
, a 1372
40 0 on 26 6 W
- ve - — 66
- —
141
28
Ian
747 54�
4 1379 75
n = � 65 i
J lY
6 826 25 6�, -
tr
f'I
93 1080 278
�D 63
414
(
156
—x
All
; ,n a +n W an 20
465
2020
+ate
30
40
+ � 3, � ( 9os
+a o +o
40 5 42
C. IUsersldan1DocumentslTE]Iprojects116-35 Pine 434ocsTinebridge TIS.docx Page 16
Thompson Engineers
Traffic and clot! Inc.
Figure 11-Build Out Year Total PM Peak Hour Traffic
10 0 4
1211516 � i�1720
70 0 90
`
l=,airviey,� Ave
". 434 61
4
1311 132
25 I=
70
i
—
0
a0
0
14
as
~�r0,
17 1390
55
1114 924
Y
95
93
1as_
40
137 1140
270
Traffic Impact Study
Pine 43, Meridian, Idaho
65 11 96
72 11� �'�= 153
1 09 1
67
40
30
913
95
30
TRAFFIC ANALYSIS
435
37
134 10 112
Capacity Analysis and Level of Service
Capacity analysis was performed using the Highway Capacity Software (HCS2010),
based on the 2010 edition of the Highway Capacity Manual. Level of service for stop
controlled intersections is based on the average delay of vehicles traveling through the
intersection. Table 7 shows the AM peak hour intersection. Table S shows the PM peak
intersection. Copies of the calculations are included in the appendix of this report.
C:1UsersldonlDocumentsiTEforojects116-35 Pine 431docslPinebridge TIS.docx page 17
Traffic Impact Study
Thompson engineers Pine 43, Meridian, Idaho
Traffic and Civil Inc.
Table 7 -AM Peak Hour Intersection Summary
LOS Summary
2016
Build Out
AM Peak Hour
Existing
Background
Total
Mitigated
Conditions
siv
v/c
LOS
slv
Vic
LOS
siv
I vlc
LOS
sir
vlc
LOS
Fairview and Hickory
14.6
0.43
B
16.6
0.52
B
19.1
0.54
B
EB Approach
11.2
B
13.2
B
16.5
B
Left
42.9
0.50
D
42.6
0.53
D
42.6
0.53
D
Through
10.5
0.41
B
12.4
0.51
B
15.6
0.58
B
Right
11.1
0.41
B
13.4
0.51
B
17.0
0.58
B
WB Approach
11.5
B
13.1
B
15.6
B
Left
42.3
0.63
D
42.7
0.69
D
43.0
0.79
D
Through
9.6
0.33
A
11.3
0.43
B
12.2
0.46
B
Right
9.6
0.33
A
11.3
0.43
B
12.2
0.46
B
NB Approach
39.6
1]
39.7
D
40.2
D
Left
42.7
0.52
D
42.5
0.54
D
42.5
0.54
D
Through
36.5
0.05
D
36.4
0.06
D
35.9
0.05
D
Right
38.0
0.37
D
38.3
0.43
D
39.7
0.65
D
SB Approach
40.7
D
43.9
D
43.7
D
Left
45.3
0.79
D
51.0
0.81
D
51.0
0.81
D
Through/Right
33.5
0.38
C
32.9
0.40
C
32.3
0.38
C
Locust Grme and Pine
26.0
0.78
C
36.1
0.91
D
41.8
0.96
D
32.9
0.90
C
EB Approach
42.0
D
57.5
E
54.7
F
58.0
E
Left
29.3
0.16
C
30.0
0.18
C
49.9
0.78
D
30.7
0.18
C
Through
42.4
0.82
D
58.9
0.88
E
53.9
0.99
F
59.5
0.88
E
Right
45.1
0.84
D
63.6
0.89
E
56.8
1.00
F
63.3
0.89
E
WB Approach
28.3
C
29.3
C
55.6
C
38.6
D
Left
27.0
0.55
C
28.6
0.64
C
82.1
0.77
D
44.9
0.81
D
Through
29.9
0.21
C
30.1
0.23
C
33.4
0.30
C
31.7
0.28
C
Right
29.5
0.14
C
29.7
0.12
C
31.7
0.17
C
30.7
0.17
C
NB Approach
24.5
C
38.7
D
42.6
D
26.7
C
Left
13.8
0.29
B
17.5
0.43
B
18.2
0.46
B
19.5
0.46
B
Through
27.5
0.77
C
48.5
0.96
D
41.9
0.98
D
22.4
0.53
C
Right
22.2
0.61
C
28.0
0.92
C
47.5
0.78
C
34.5
0.80
C
SB Approach
20.1
C
31.3
C
32.0
D
26.8
C
Left
17.5
0.59
B
59.9
0.92
E
63.7
1.16
F
15.1
0.59
B
Through
20.5
0.62
C
26.4
0.74
C
25.9
0.78
C
28.9
0.77
C
Right
20.6
0.62
C
26.5
0.74
C
26.1
0.78
C
29.2
0.76
C
Pine and Webb
10.1
C
EB Approach
8.4
A
9.1
A
12.2
0.63
A
WB Approach
4.4
A
4.7
A
5.8
0.25
B
NB Approach
9.4
A
10.3
B
9.0
0.18
E
SB Approach
5.4
0.08
B
Fairview and Webb
10.3
B
10.9
B
21.7
C
EB Approach
8.2
0.01
A
8.2
0.01
A
8.2
0.01
A
WB Approach
10.0
0.00
B
11.4
0.00
B
13.5
0.19
B
NB Approach
40.0
0.30
E
SB Approach
10.3
0.02
B
10.9
0.02
8
10.9
0.11
B
Locust Grove and State
15.4
C
21.1
C
31.7
D
NB Approach
10.2
0.01
B
11.7
0.01
B
12.0
0.02
B
SB Approach
8.4
0.00
A
8.9
0.00
A
9.6
0.11
A
EB Approach
15.4
0.09
C
21.1
0.16
C
17.6
0.28
C
WB Approach
31.7
0.25
D
Locust Grove and Wilson
15.3
C
21.5
C
24.4
C
WB Approach
15.3
0.31
C
21.5
0.39
A
24.4
0.43
C
SBApproach
9.0 1
0.02 1
A 1
9.4 1
0.04 1
C 1
9.7 1
0.04 1
A
C:IUsersldanlDoczimentslTEllprojectsll6-35 Pine 431docslPinebridge TIS.doex Page 18
Thompson
Traffix and Civilk.Lngineeirs
Inc.
Table 8 - PM Peak Hour Intersection Analysis Summary
Traffic Impact Study
Pine 43, Meridian, Idaho
LOS Summary
2016
Build Out
PM Peak Hour
Existing
Back round
Total
Mitigate
Conditions
siV
Vic
LOS
siv
Vic
LOS
slv
vic
LOS
1 shv
vic
LOS
Fairview and Hickory
17.8
0.68
B
21.6
0.80
C
28.7
0.84
C
EB Approach
10.4
8
10.7
B
12.4
B
Left
12.1
0.26
B
17.2
0.36
8
19.1
0.40
B
Through
10.1
0.34
B
10.1
0.40
B
11.8
0.45
B
Right
10.6
0.34
B
10.7
0.40
B
12.5
0.45
B
WB Approach
19.2
B
24.7
C
31.1
C
Left
7.9
0.07
A
7.8
0.10
A
8.6
0.22
A
Through
19.1
0.75
B
24.1
0.86
C
30.2
0.91
C
Right
19.6
0.75
B
26.0
0.88
C
34.1
0.94
C
NB Approach
31.3
C
40.6
D
72.4
E
Left
28.8
0.51
C
42.3
0.72
D
38.6
0.67
D
Through
33.4
0.27
C
36.9
0.44
D
35.7
0.38
D
Right
34.7
0.49
C
39.7
0.61
D
128.1
1.05
F
SB Approach
35.0
C
37.7
D
35.5
D
Left
32.3
0.30
C
32.5
0.43
C
31.6
0.40
C
Through/Right
38.4
0.62
D
44.2
0.68
D
40.4
0.59
D
Locust Grope and Pine
28.3
0.96
C
42.6
1.13
D
63.1
1.26
E
32.9
0.93
C
EB Approach
36.9
D
45.2
D
46.6
E
42.1
D
Left
41.4
0.78
D
34.0
0.48
C
39.4
0.59
D
37.9
0.57
D
Through
34.7
0.54
C
47.6
0.69
D
47.9
0.68
E
43.0
0.64
D
Right
35.1
0.57
D
52.4
0.73
D
50.3
0.70
F
44.2
0.66
D
VVB Approach
31.3
C
52.3
D
109.1
E
45.5
D
Left
24.3
0.77
C
43.2
0.92
D
141.3
1.20
F
30.3
0.68
C
Through
40.1
0.87
D
70.2
0.97
E
107.4
1.09
F
55.3
0.89
E
Right
26.9
0.37
C
29.7
0.42
D
33.4
0.54
C
38.1
0.90
E
NB Approach
28.6
C
46.0
D
59.4
E
25.4
C
Left
14.1
0.39
B
18.5
0.55
B
25.4
0.65
C
19.3
0.55
B
Through
29.8
0.82
C
47.1
0.95
D
59.4
0.99
E
27.5
0.80
C
Right
30.6
0.82
C
50.7
0.97
D
66.1
1.02
E
%4
0.39
B
SB Approach
22.7
C
28.5
C
29.1
C
28.0
C
Left
16.6
D.25
B
21.9
0.40
C
27.2
0.66
C
20.9
0.49
C
Through
23.1
D.62
C
28.8
0.73
C
29.1
0.73
C
28.5
0.73
C
Right
23.2
0.62
C
29.0
0.73
C
29.4
0.73
C
28.7
0.73
C
Pine and Webb
10.3
B
EB Approach
5.1
A
5.3
A
6.3
0.29
A
WB Approach
7.6
A
8.7
A
12.6
0.63
B
NB Approach
6.9
A
7.4
A
9.5
0.37
A
SB Approach
9.3
0.13
A
Fairview and Webb
14.4
B
19.5
C
30.8
D
EB Approach
11.9
0.02
B
16.1
0.02
C
14.6
0.02
B
WB Approach
9.8
0.00
A
11.0
0.00
B
12.5
0.15
B
NB Approach
59.9
0.56
F
SB Approach
14.4
0.03
B
19.5
0.06
C
26.9
0.08
D
Locust Grove and State
14.3
B
17.5
C
42.2
E
NB Approach
9.6
0.02
A
10.5
0.03
B
10.7
0.03
B
SB Approach
10.1
0.00
B
11.5
0.00
8
14.0
0.18
B
EB Approach
14.3
0.07
B
17.5
0.10
C
80.7
0.61
F
WB Approach
24.5
0.15
C
Locust Grove and Wilson
24.7
C
50.8
F
76.2
F
WB Approach
24.7
0.41
C
50.8
0-71
F
76.2
0.83
F
5B Approach 1
10.9 1
0.02 1
B 1
13.0 1
0.11 1
B 1
14.1 1
0.14 1
B
C:IUsers ldanlDocuments)T Pprojectsl16-3.5 Pine 431docs)Pinebridge TIS.docx Page 19
Thompson Engineers Traffic Impact Study
Traffic and CMI Inc. Pine 43, Meridian, Idaho
Intersection Analysis
The intersection of Fairview Avenue and Hickory Avenue will operate at an acceptable
level of service without any improvements to the intersection.
The intersection of Locust Grove Road and Pine Avenue can be expected to operate at
LOS E under build out conditions in the PM peak hour with some movements operating
at LOS F. The overall volume to capacity ratio of the intersection is anticipated to be 1.13
under background traffic conditions in the PM peak hour. The addition of a westbound
left turn lane and northbound right turn lane will improve the operation to LOS D and the
volume to capacity ratio of the intersection to 0.93. This project does not control the
right-of-way at that intersection. Increased capacity on Fairview Avenue and Eagle Road
will ease some of the demand on Locust Grove Road and Pine Avenue.
The intersection of Webb Avenue and Pine Avenue will operate at an acceptable level of
service under build out traffic conditions with the existing lane configurations for the
roundabout.
The intersection of Locust Grove Road and State Avenue is anticipated to operate at LOS
E under build out traffic conditions. The primary movement causing the intersection
delay is the westbound left turn movement. When Fairview Avenue is widened and the
demand on Pine Avenue eases, vehicle wanting to make this movement will have the
option of going to the signal at Pine Avenue and Locust Grove Road.
All other stop controlled intersections are anticipated to operate at an acceptable level of
service under build out conditions.
Signal Warrant Analysis
The intersection of State Avenue and Locust Grove Avenue is anticipated to operate at
LOS E under total traffic conditions, with the westbound left turn movement operating at
LOS F. As required, this intersection was reviewed to determine if the signal warrants of
the MU')<CD are satisfied. Only the traffic warrants, warrants 1, 2, and 3, were reviewed.
Four and eight hour volumes are estimated based on traffic counts on Locust Grove
Road. The results are summarized below. Calculations are included in the appendix.
Table 9-Signal Warrant Analysis
Locust Grove Rd.
Warrant 1
Warrant 1
Warrant 1
Warrant 2
Warrant 3
and State Ave.
Cond A
Cond B
A+B
2016 Existing
Traffic
No
No
No
No
No
2025 Background
Traffic
No
No
No
No
Yes
2025 Total Traffic
No
No
No
No
No
Only warrant 3 is satisfied in the build out year under background traffic conditions. If
the State Avenue approach is constructed with two lanes, warrant 3 will not be satisfied.
C•IUsersldanlDocuments4TEliprojectsll6-35 Pine 43WacsTinebridge TIS.dorA Page 20
Thompson Engineers
Traffic and Civil I
Traffic Impact Study
Pine 43, Meridian, Idaho
This intersection is located approximately 1,000 feet from Pine Avenue and 1,500 feet
from Fairview Avenue. It does not meet the spacing requirements recommended in the
ACED Policy Manual.
Site Access
The developer is proposing access onto Fairview Avenue via Webb Avenue at the
approximate Iocation of an existing approach. Webb Avenue is shown as a planned
collector road included in the COMPASS system. This public road approach will replace
approximately 5 private approaches. This approach should align with a private approach
located on the north side of Fairview. This approach is approximately halfway between
Locust Grove Road and Hickory Avenue, and about 1800 feet from each. This approach
is in conformance with ACHD access policy.
The developer is proposing access onto Locust Grove Road via State Avenue. This
approach is proposed to align with Shellbrook Drive on the west side of Locust Grove
Road. State Avenue is shown as a planned collector road in the COMPASS system. This
approach is approximately I000 feet north of the signalized intersection at Pine Avenue
and 1500 feet south of the signalized intersection at Fairview Avenue. This approach is
in conformance with ACHD access policy.
The developer is proposing access onto Pine Avenue at Newbridge Place and at three
existing approaches. The approaches currently do not serve any traffic. The approaches
were constructed when Pine Avenue was constructed.
Roadway Analysis
Roadway segments are analyzed under horizon year peak hour traffic in accordance with
Table 2 of the ACHD Development Policy Manual. The results are shown in Table 10.
Table 10 - Roadway Segment Analysis
Roadway
Location
Direction
Peak
Build Out
Site
Off
Total
Segment
Hour
Year
Traffic
Site
Traffic
Traffic
Traffic
Pine Avenue
W. of Park Lane
EB
AM
930
105
1035
WB
PM
900
90
0
990
Hickory .Avenue
S. of Jewell
NB
PM
235
30
0
255
SB
AM
220
20
0
240
Locust Grove
N. of Pine
SB
AM
1380
75
0
1455
NB
PM
1380
85
0
1465
Hickory Avenue is classified as a collector roadway. The minimum level of service
required by ACHD policy is LOS D with a maximum directional hourly volume of 425
vehicles per hour for a two lane road. This road is anticipated to operate below the
maximum recommended volume.
Pine Avenue is classified as a minor arterial roadway. The minimum level of service
required by ACHD policy is LOS E with a maximum directional hourly volume of 1540
vehicles per hour for two through lanes. State Avenue is anticipated to operate below the
maximum recommended volume.
C. I UserstdanlDocumentslTEItprojectsl16-35 Pine 4AkcslPinebridge TIS.doex Page 21
Thompson Engineers Traffic Impact Study
Traffic and QW1 Inc. Pine 43, Meridian, Idaho
Locust Grove Road is classified as a minor arterial roadway. The minimum level of
service required by ACHD policy is LOS D with a maximum directional hourly volume
of 1540 vehicles per hour. Locust Grove Road is anticipated to operate below the
maximum recommended volume.
Webb Avenue will be classified as a collector road. The maximum anticipated
directional volume is 145 vehicles in the PM pear hour. This will be well below the
maximum recommended volume for collector roads.
State Avenue will be classified as a collector road. The maximum anticipated directional
volume is 135 vehicles in the PM peak hour. This will be well below the maximum
recommended volume for collector roads.
Site Circulation
Site circulation is provided by State Avenue and Webb Avenue. Webb Avenue provides
north -south circulation and State Avenue provides east -west circulation. Residential
subdivisions, apartment complexes, office parks, and retail centers all take access off
these roads.
The intersection of Webb Avenue and State Avenue will have volumes of less than 100
vehicles per hour on all approaches. More through traffic is anticipated on Webb Avenue
and more turning traffic on State Avenue. Normal right-of-way rules may not be obvious
at this intersection. The State Avenue approaches should be stop controlled.
Right-of-way rules on all minor approaches on Webb Avenue and State Avenue may not
be obvious. All minor approaches should be stop controlled on the minor approach.
Assuming the minor approach is stop controlled, the anticipated traffic at each
intersection, and the anticipated level of service can be determined. Figure 12 shows the
build out traffic at each internal intersection in the AM peak hour, and Figure 13 shows
the build out traffic at each internal intersection in the PM peak hour.
Copies of the level of service calculations are included in the appendix of this report.
None of the proposed internal intersections on Webb Avenue or State Avenue will be
signalized, therefore the separation of all roads must be at least 150 feet. As shown in
Figure 14, all of the intersections will exceed this distance. These internal intersections
will meet ACHD Access Policy for collector roads.
The access points on Pine Avenue all exceed the ACHD Access Policy access
management separation of 330 feet.
All of the measurements shown are on a tangent. When the roadways are curved, the
actual measurement will exceed the measurement shown.
C:IUsersldanlDocumentslMhprojectsl16-35Pine 43ldocsWinebridge TIS.docx Page 22
Thompson Engineers Traffic Impact Study
rrafEicanarCivil Inc. Pine 43, Meridian, Idaho
Figure 12 - Internal Intersection AM Peak Hour
zo 70 39
Los 3 �6
9
Daly .7 0 Mf1 0 � ami�r;R�wnmiml
wk 0117 2
— 1 113 1 _ —>
l 4 63 � 10
LOS A 15� -
Deby 9.5 0 a 2 0„_ - -
Yh OD3 7 �� SIT 1
0 71 2
Los A 9 a9 :�7s ; , r
e5l
95
v7 OA1101 3 95 d 31 �D94
LOS A 10 19
LOS A Delay 9A 0 W4
10 a. 1 Deby 9.7 Vic 0A2 5
' � YIC 0.02 �
---� - - 2 W 2
25 104 10 LOS A
99 4 Delay 92
uuuHfUjm � . 04 OM
D
. a LOS 10A 34 WS 22 �7 r 15 CJ {i 10
20 0 j1j10 `...:S ,' : V& 0A9 25 I{I� 0 0 W525 S2
�7 0
e `�,"w-rw2f4d'' 2 `"_'�--mot-z•,� •'
0 �0 s _',� a ,�•: A��d°�-1;�i7uF:m1A1WE 7. _
y
0 0 6 af. 7
L05 A
Delay 92 0 40i
vic OA4 � 22 � I
39 S:1 �=52 - tiIIUUUIII l.ElflllptS ImllA6lllllf[llvr ,i 20 0 10 I
5 i rV rrounn� w- u{
30 0 29 1pllNNIlIIIILLIIUOIIRUUaOII bus u�li - i
LOS A Los e
9A 1'- 7. 12.8
..�era y �--- 4�=.t. �,. _. Delay !
5 100 a5 lWYIUI ar�.`ti"r� YrC 000
n- 00nf 0 0
� 1 j
LOS A 0 Nr
Delay 82 0 � ws i�v 0z � " M
Vic 0.01 0 0 20 70D
�
a 75 0 1 n 20
C. 1 Usersldan0ocuments ITEIlprojectsl 1 b-35 Pine 43WocslPinebridge TIS.doex Page 23
q
Thompson Eng►veers Traffic Impact Study
Traffic and Civil Pine 43, Meridian Idaho
rt,�.
Figure 13 -Internal Intersections PM Peak Hour
19 77 40_�.�—
, i
LOS s 25 r�� �,
53
Delay 11.1 a W1 ( 0
vie OAS 5 E 05
5 S1 10 -
40 0 5
25�5 LOS 8
05 a S7 p36 Deby 10-5
i5 � ii /�5 rlc 0.04
20 0 2
«.
qF 7 0 4
25
DO a 52 a3g
� � 0"Fa
0 a 6
LOS A
Deby 9.1
ric 0-01
40 =� S3 �:137
30 �1a
20 0 5
LOS A
Delay 9.3
W. am
LOS A 5�
Defy 9,,E 0
+uc 0.01
3 55
LOS A
Delay 9.3
5 33
�]
vic OA7
5 �<:
0
,u10 ZZ 12
3
LOS A
Delay 9A
r 3
0 �%% W4 00
rlc 0A1
3 67�>LI 4r5D3
�
12 89 14
23 0
�0]
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Cal Users4danlDocumentslTEPprojectsU6-35 Pine 431docslPinebridge TIS.docx Page 24
Thompson Engineers
Traffic andClvi! Inc, --
Figure 14 .- Internal Intersection Spacing
Traffic Impact Study
Pine 43, Meridian, Idaho
GAW
41
C:1 UsersldanlDocumentslTEIlprojects116-35 Pine 43WocsWinebridge TIS.docx Page 25
Thompson Engineers
Traffic and Civil lnc.
Traffic Impact Study
Pine 43, Meridian, Idaho
Turn Lanes
There are existing left turn lanes on Fairview Avenue, Locust Grove Road and Pine
Avenue. A left turn lane warrant analysis is not required.
Right turn lanes are analyzed using the guideline in Section 7106 of the ACHD
Development Policy Manual. Analysis is shown in Figure 15. The posted speed limit on
Locust Grove Road is 35 MPH and 30 MPH on Pine Avenue.
A right turn lane is warranted on northbound Locust Grove at State Avenue. A right turn
is not warranted at any entrance to the site from Pine Avenue.
Table II - Right Turn Lane Data
Roadway
Through
Traffic
Right
Turns
Critical
Movement
Locust Grove
State Avenue
AM Peak
825
15
PM Peak
1379
55
X
Pine Avenue
Site Entrance WB
AM Peak
345
15
PM Peak
913
30
X
Pine Avenue
Site Entrance EB
AM Peak
963
15
X
PM Peak
475
20
Figure 15- Right -Turn Lane Guidelines for Four Lane Roadways
140
,So
!00
40
IV
4
3W
KW -Road
Weed
45 m{h
a 40 r+ph
krrA)
(70 k"%%)
\(8500km
Add Rid
-Tum
f. r.c
{�
Locust
Grove
and State
Pine Entrance FB
...m
Pine Entrance 14B
5N 7T` 94C 13fG
iia)Otdtoad Volume lone directonl, veh,h
C:lUsersldanlDocumentslTEPprojectsl16-35 Pine 431docsWinebridge TIS.docx Page 26
BCC
Thompson kEnqineers
Traffic and Civil rnr
DISCUSSIONS
Roadway Improvements
Required Due to Existing Traffic Conditions
Traffic Impact Study
Pine 43, Meridian, Idaho
The intersection of Fairview Avenue and Hickory Avenue functions at an acceptable
level of service under existing traffic conditions. No improvements are required.
The intersection of Pine Avenue and Locust Grove Road functions at an acceptable level
of service under existing traffic conditions, however, the overall intersection functions at
a volume to capacity ratio of 096 in the PM peak hour. Capacity improvements are
required to reduce the volume to capacity ratio.
The intersection of Pine Avenue and Webb Avenue functions at an acceptable level of
service under existing traffic conditions. No improvements are required.
The intersection of Locust Grove and Wilson Road functions at an acceptable level of
service under existing traffic conditions. No improvements are required.
The intersection of Locust Grove and Shellbrook (State Avenue) functions at an
acceptable level of service under existing traffic conditions. No improvements are
required.
The intersection of Fairview Avenue and Webb Avenue (driveway) functions at an
acceptable level of service under existing traffic conditions. No improvements are
required.
Locust Grove Road is currently operating below the vehicle volume threshold for LOS D,
the recommended level of service for a major arterial roadway. No improvements are
required.
Pine Avenue is currently operating below the vehicle volume threshold for LOS D, the
recommended level of service for a minor arterial roadway. No improvements are
required.
Hickory Avenue is currently operating below the vehicle volume threshold for LOS D,
the recommended level of service for a collector roadway. No improvements are
required.
Required Due to Background Traffic Conditions
The intersection of Fairview Avenue and Hickory Avenue is anticipated to function at an
acceptable level of service under background traffic conditions. No improvements are
required.
The intersection of Pine Avenue and Locust Grove Road is anticipated to function at an
acceptable level of service under background traffic conditions, however, some
approaches and movements will operate at LOS E. The overall intersection and some
movements function with a volume to capacity ratio of greater than 0.90. Capacity
improvements are required to improve the operation of the intersection.
C, IUsersldanlDocumendslTEIlprojects116-35 Pine 431docslPinebridge TIS.doex Page 27
Thompson Engineers
rrafrlic and Cmi rnc.
Traffic Impact Study
Pine 43, Meridian, Idaho
The intersection of Pine Avenue and Webb Avenue is anticipated to function at an
acceptable level of service under background traffic conditions. No improvements are
required.
The intersection of Locust Grove and Wilson Road is anticipated to function at LOS F
under background traffic conditions. Capacity improvements are needed to mare this
intersection function at an acceptable level. The proximity of Wilson to Fairview
prevents the installation of a signal.
The intersection of Locust Grove and Shellbrook (State Avenue) is anticipated to
function at an acceptable level of service under background traffic conditions. No
improvements are required.
The intersection of Fairview Avenue and Webb Avenue (driveway) is anticipated to
function at an acceptable level of service under background traffic conditions. No
improvements are required.
Locust Grove Road is anticipated to operate below the vehicle volume threshold for LOS
D, the recommended level of service for a major arterial roadway under background
traffic conditions. No improvements are required.
Pine Avenue is anticipated to operate below the vehicle volume threshold for LOS D, the
recommended level of service for a minor arterial roadway under background traffic
conditions. No improvements are required.
Hickory Avenue is anticipated to operate below the vehicle volume threshold for LOS D,
the recommended level of service for a collector roadway under background traffic
conditions. No improvements are required.
Required Due to Total Traffic Conditions
The intersection of Fairview Avenue and Hickory Avenue is anticipated to function at an
acceptable level of service under total traffic conditions. No improvements are required.
The intersection of Pine Avenue and Locust Grove Road is anticipated to function at LOS
E under total traffic conditions with the westbound PM movements operating at LOS F.
The overall intersection and some movements function with a volume to capacity ratio of
greater than 0.90. Additional westbound left turn lanes and through lanes, and a
northbound right turn lane are required to make the intersection operate at an acceptable
level of service. Current improvements on Eagle Road as well as programmed
improvements on Fairview Avenue may reduce the demand on this intersection.
The intersection of Pine Avenue and Webb Avenue is anticipated to function at an
acceptable level of service under total traffic conditions. No improvements are required.
The intersection of Locust Grove and Wilson Road is anticipated to function at LOS F
under total tragic conditions. Capacity improvements are needed to make this
intersection function at an acceptable level. This project will provide an opportunity for
traffic to access the transportation system via an alternative route.
C:lUsersldanlDocumentslTEIlprojectsll6-35 Pine 431docslPinebridge TIS.docx Page 28
Thompson JEngineers
Traffic and Civil Inc
Traffic Impact Study
Pine 43, Meridian, Idaho
The intersection of Locust Grove and State Avenue is anticipated to function at LOS E in
the PM peak hour under total traffic conditions. The westbound left turn movement will
function at LOS F. Improvements to Eagle Road may ease the demand on this movement.
The intersection of Fairview Avenue and Webb Avenue (driveway) is anticipated to
function at an acceptable level of service under total traffic conditions. No improvements
are required.
Locust Grove Road is anticipated to operate below the vehicle volume threshold for LOS
D, the recommended level of service for a major arterial roadway under total traffic
conditions. No improvements are required.
Pine Avenue is anticipated to operate below the vehicle volume threshold for LOS D, the
recommended level of service for a minor arterial roadway under total traffic conditions.
No improvements are required.
Hickory Avenue is anticipated to operate below the vehicle volume threshold for LOS D,
the recommended level of service for a collector roadway under total traffic conditions.
No improvements are required.
CONCLUSIONS
This study identifies transportation impacts associated with the proposed Pine 43
Development in Meridian, Idaho. The development is a mixed use development. This is
an update for a previous study submitted in 2007. The update is required as the
developer is requesting a change in land use. Below are the findings of this report:
■ The original project consisted of 550,000 SF of commercial space, 1,800,000 SF of
Office Park, and 850 townhomes. It was estimated to generate 37,270 trips per day,
with 3880 occurring in the PM peak hour. Part of this project has been constructed.
This is the Scentsy headquarters.
■ This development consists of 229 single family dwellings, 480 apartments, 108
townhomes, 96,000 SF of retail space and 417,000 SF of office space. Based on the
trip generation methods recommended in the Trip Generation Manual, the site will
generate 13,199 new trips per day, of which 10558 trips will occur during the AM
peak hour and 1325 trips will occur during the PM peak hour.
■ The proposed development will generate less traffic than the currently approved
development plan.
! The large number of housing units within the development provides opportunities
for trips to be captured internally.
■ The site will access the transportation system primarily via Pine Avenue, Locust
Grove Road, and Fairview.
■ This project will construct a north -south collector road (Webb Avenue) and an east -
west collector road (State Avenue) that are included in the COMPASS network.
i The Idaho department of Transportation is currently widening Eagle Road which
will add additional capacity to the transportation system.
i The Ada County Highway District has programmed the widening of Fairview
Avenue to seven lanes_ This will add capacity to the transportation system.
C.-1UsersldanlDocumentslTEIlprojectsl16-35 Pine 431docsTinebridge TIS.docx Page 29
Thompson Engineers
Traffic and Clvii Inc.
Traffic Impact Study
Pine 43, Meridian, Idaho
■ The intersection of Fairview Avenue and Hickory Avenue will operate at an
acceptable level of service under background and total traffic conditions in the build
out year. The critical peak hour is in the PM peak hour.
■ The intersection of Pine Avenue and Locust Grove will operate at a poor level of
service under background and total traffic conditions in the build out year, and the
volume to capacity ratio will exceed the maximum allowable per ACHD policy.
Installing a westbound left turn lane and a northbound right turn lane will improve
the level of service on critical approaches and lower the volume to capacity ratio.
The critical peak hour is in the PM peak hour. The developer does not control the
right-of-way at this intersection. Improvements to Fairview Avenue and Eagle Road
will provide additional capacity to the system and will relieve some demand on this
intersection.
■ The intersection of Pine Avenue and Webb Avenue will operate at an acceptable
Ievel of service under background and total traffic conditions in the build out year.
The critical peak hour is in the PM peak hour.
■ The intersection of Fairview Avenue and Webb Avenue will operate at an
acceptable level of service under background and total traffic conditions in the build
out year. The critical peak hour is in the PM peak hour.
■ The intersection of Locust Grove Road and State Avenue will operate at an LOS E
under background and total traffic conditions in the build out year. A signal is not
warranted. The critical peak hour is in the PM peak hour. If the intersection of
Locust Grove Road and Pine Avenue is improved or has a decrease in demand,
traffic from State Avenue will be diverted to this intersection.
■ The intersection of Locust Grove and Wilson Road will operate at LOS F under total
traffic conditions in the build out year. The critical peak hour is in the PM peak
hour. This project will provide an opportunity for traffic at this intersection to
access an alternative connection to the transportation system.
■ Locust Grove Road is expected to operate at better than LOS E in the build out year
based on the ACHD policy for major arterial roads. The road was widened in 2013.
■ Pine Avenue is expected to operate at better than LOS E in the build out year based
on the ACHD policy for minor arterial roads. The road was widened in 2013.
■ Hickory Avenue is expected to operate at better than LOS D in the build out year
traffic conditions based on the ACHD policy for collector roads.
■ The proposed site plan provides good circulation and good connectivity to other
developments. The spine road and roundabout will provide excellent on site
circulation and will prevent congestion at the main entrance.
■ A right turn lane is warranted on Locust Grove Road at State Avenue.
C:lUsersldanlDocumentslTEIlprojects116-35Pine 43&ocslPinebridge TIS.docx Page 30
Thompson Engineers
Traffic and Civil Inc.
Traffic Impact Study
Pine 43, Meridian, Idaho
APPENDIX
Scoping Summary
Traffic Counts
Accident Data
Capture Calculations
HCS Calculations
Signal Warrant Analysis