HomeMy WebLinkAboutEX_07_RS_Traffic_Study_250507_v1kimley-horn.com 2828 Colby Avenue | Suite 200, Everett, WA 98201 (425) 708 8275
MEMORANDUM
To:Alex Morganroth, AICP, Senior Planner, City of Renton
From:Matthew Palmer, PE
Kimley-Horn and Associates, Inc.
Date:November 18, 2024
Subject: Windsor Court Plat (KH 090223175) – Trip Generation, Trip Distribution, and Scoping
Kimley-Horn and Associates, Inc. (Kimley-Horn) has been retained to provide an updated scoping
memorandum for the proposed Windsor Court Plat Development (Development). This scoping memo
summarizes the trip generation and trip distribution for the Development. The Development is located
in the City of Renton (City) on the west side of 108th Avenue SE (SR-515), north of SE 196th Street, on
parcels 6623400232 and 6623400233. The parcels are listed as occupied with three (3) existing single-
family residential units and 4,024 square foot (SF) storage/warehousing per the King County Parcel
Viewer. A site plan is included in Appendix A.A site vicinity map is shown in Figure 1.
Figure 1: Vicinity Map
EXHIBIT 7
RECEIVED
05/19/2025 jding
PLANNING DIVISION
11/18/24
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kimley-horn.com 2828 Colby Avenue | Suite 200, Everett, WA 98201 (425) 708 8275
1. TRIP GENERATION
The Development is proposed to consist of 20 new single-family detached units. The trip generation
calculations have been performed using data published by the Institute of Transportation Engineers
(ITE)Trip Generation Manual, 11th Edition (2021). The average trip generation rates for ITE Land Use
Codes (LUC) 150, Warehousing, and ITE LUC 210, Single-Family Detached Housing, have been used
for the trip generation calculations. The existing single-family residential units and warehousing will be
removed during construction of the Development. Therefore, the existing trips should be credited to the
Development’s new anticipated trips. The trip generation for the Development is summarized in Table
1.
Table 1: Trip Generation Summary
Land Use Size
Average
Daily
Trips
(ADTs)
AM Peak-Hour Trips PM Peak-Hour Trips
In Out Total In Out Total
Single-Family
Detached Housing
ITE LUC 210
20 Units 189 4 10 14 12 7 19
Single-Family
Detached Housing
ITE LUC 210
(Removed)
-3 Unit -28 -1 -1 -2 -2 -1 -3
Warehousing
ITE LUC 150
(Removed)
-4,024 SF -7 -1 0 -1 0 -1 -1
TOTAL 154 2 9 11 10 5 15
The Development is anticipated to generate approximately 154 new ADTs with approximately 11 new
AM peak-hour trips and approximately 15 new PM peak-hour trips. The trip generation calculations are
provided in Appendix B.
2. TRIP DISTRIBUTION
The Development will have access to 108th Avenue SE along the east side of the Development. The
trip distribution is based on similar uses and surrounding land uses. The anticipated trip distribution is:
l 70% to and from the north on SR-515
l 30% to and from the northwest along I-5
l 25% to and from the northeast along I-405
l 15% to and from Local Renton
l 30% to and from the south along SR-167
Detailed trip distributions for the AM peak-hour and PM peak-hour will accompany the full Traffic Impact
Analysis (TIA) report if required once City staff has approved the anticipated trip distribution.
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kimley-horn.com 2828 Colby Avenue | Suite 200, Everett, WA 98201 (425) 708 8275
3. BASELINE ANALYSIS
The Development is anticipated to be constructed as a single phase during the Summer of 2025 with
occupancy/build-out completion near the Summer of 2027. The 2027 baseline volumes would be
calculated using a 3.0% annually compounding growth rate applied to the 2024 existing traffic volumes,
or 2.5% annually compounding growth rate along with any additional pipeline projects that may be
included as directed by the City of Renton if a full TIA is required.
4. TRANSPORTATION IMPACT FEES
The transportation impact fees have been calculated using the 2023-2024 City of Renton Fee Schedule
(April 2024).Section XII. Development Fees (5)(b) lists the applicable impact fees for the proposed and
existing uses. This fee is subject to change until building permits are pulled.
The Development will receive a credit for the existing single-family residential units and warehouse that
will be removed. Therefore, the development will have a total mitigation fee of $182,017.43 The total
transportation impact fees are summarized in Table 2.
Table 2: Transportation Mitigation Fees
Fee Schedule - Land Use Fee per
Trip Type
Trip
Type Units/SF Total
(xxxvi) Single Family House $11,485,67 Units 20 $229,713.40
(xxxvi) Single Family House (Removed)$11,485.67 Units -3 -$34,457.01
(xxxix) Warehousing (Removed)$3.29 SF -4,024 -$13,238.96
TOTAL $182,017.43
The 2023-2024 City of Renton Fee Schedule (April 2024)is provided in Appendix C.
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A
APPENDIX A
SITE PLAN
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A - 1
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B
APPENDIX B
TRIP GENERATION
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Windsor Court Plat
KH 090223175
Trip Generation for:Weekday
(a.k.a.):Average Weekday Daily Trips (AWDT)
NET EXTERNAL TRIPS BY TYPE
IN BOTH DIRECTIONS DIRECTIONAL ASSIGNMENTS
Gross Trips Internal
Crossover TOTAL PASS-BY DIVERTED LINK NEW PASS-BY DIVERTED
LINK NEW
LAND USES VARIABLE
ITE
LU
code
Trip
Rate
%
IN
%
OUT
In+Out
(Total)
% of
Gross
Trips
Trips
In+Out
(Total)
In+Out
(Total)
% of
Ext.
Trips
In+Out
(Total)
% of
Ext.
Trips
In+Out
(Total)
In+Out
(Total)In Out In Out In Out
Single-Family Detached Housing 20 unit 210 9.43 50%50%189 0%0 189 0%0 0%0 189 0 0 0 0 95 94
Single-Family Detached Housing
(Removed)-3 unit 210 9.43 50%50%-28 0%0 -28 0%0 0%0 -28 0 0 0 0 -14 -14
Warehousing (Removed)-4.024 KSF 150 1.70 50%50%-7 0%0 -7 0%0 0%0 -7 0 0 0 0 -4 -3
Total 154 0 154 0 0 154 0 0 0 0 77 77
B - 1
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Windsor Court Plat
KH 090223175
Trip Generation for:Weekday, Peak Hour of Adjacent Street Traffic, One Hour between 7 and 9 AM
(a.k.a.):Weekday AM Peak Hour
NET EXTERNAL TRIPS BY TYPE
IN BOTH DIRECTIONS DIRECTIONAL ASSIGNMENTS
Gross Trips Internal
Crossover TOTAL PASS-BY DIVERTED LINK NEW PASS-BY DIVERTED
LINK NEW
LAND USES VARIABLE
ITE
LU
code
Trip
Rate
%
IN
%
OUT
In+Out
(Total)
% of
Gross
Trips
Trips
In+Out
(Total)
In+Out
(Total)
% of
Ext.
Trips
In+Out
(Total)
% of
Ext.
Trips
In+Out
(Total)
In+Out
(Total)In Out In Out In Out
Single-Family Detached Housing 20 unit 210 0.70 26%74%14 0%0 14 0%0 0%0 14 0 0 0 0 4 10
Single-Family Detached Housing
(Removed)-3 unit 210 0.70 26%74%-2 0%0 -2 0%0 0%0 -2 0 0 0 0 -1 -1
Warehousing (Removed)-4.024 KSF 150 0.17 77%23%-1 0%0 -1 0%0 0%0 -1 0 0 0 0 -1 0
Total 11 0 11 0 0 11 0 0 0 0 2 9
B - 2
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Windsor Court Plat
KH 090223175
Trip Generation for:Weekday, Peak Hour of Adjacent Street Traffic, One Hour between 4 and 6 PM
(a.k.a.):Weekday PM Peak Hour
NET EXTERNAL TRIPS BY TYPE
IN BOTH DIRECTIONS DIRECTIONAL ASSIGNMENTS
Gross Trips Internal
Crossover TOTAL PASS-BY DIVERTED LINK NEW PASS-BY DIVERTED
LINK NEW
LAND USES VARIABLE
ITE
LU
code
Trip
Rate
%
IN
%
OUT
In+Out
(Total)
% of
Gross
Trips
Trips
In+Out
(Total)
In+Out
(Total)
% of
Ext.
Trips
In+Out
(Total)
% of
Ext.
Trips
In+Out
(Total)
In+Out
(Total)In Out In Out In Out
Single-Family Detached Housing 20 unit 210 0.94 63%37%19 0%0 19 0%0 0%0 19 0 0 0 0 12 7
Single-Family Detached Housing
(Removed)-3 unit 210 0.94 63%37%-3 0%0 -3 0%0 0%0 -3 0 0 0 0 -2 -1
Warehousing (Removed)-4.024 KSF 150 0.18 28%72%-1 0%0 -1 0%0 0%0 -1 0 0 0 0 0 -1
Total 15 0 15 0 0 15 0 0 0 0 10 5
B - 3
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APPENDIX C
RENTON FEE SCHEDULE
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C - 1
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C - 2
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