HomeMy WebLinkAboutEx07_Traffic_Memo TENW
Transportation Engineering NorthWest
Transportation Planning | Design | Traffic Impact & Operations
11400 SE 8th Street, Suite 200, Bellevue, WA 98004| Office (425) 889-6747
MEMORANDUM
DATE: May 23, 2019
TO: Justin Johnson
City of Renton
FROM: Curtis Chin, P.E.
TENW
SUBJECT: Trip Generation Memo
Renton Walmart Expansion – Renton, WA
TENW Project No. 5918
This memorandum documents the trip generation estimate for the proposed expansion of the existing Walmart
located at 743 Rainier Avenue S in Renton, WA.
Project Description
The existing Walmart is located at 743 Rainier Avenue S in Renton, WA as shown in the Attachment A
vicinity map. The proposed project would expand the existing 150,158 square foot (SF) Walmart by up to
1,400 SF of new building area on the north side of the building. The purpose of the proposed expansion is
to support WalmartÊs Online Grocery Pickup (OGP) program. Vehicular access to/from the project would
be provided via the existing site driveways located on SW 7th Street, Rainier Avenue S, SW Grady Way,
and Lind Avenue SW. No new site driveways are proposed as part of the proposed project. A preliminary
site plan concept is shown in Attachment B.
Trip Generation
Because the proposed expansion is to support WalmartÊs OGP program, which is provided as a convenience
to existing customers, the overall trip generation for the Renton Walmart is not expected to change due to the
expansion. However, as a conservative approach, new trips associated with the 1,400 SF expansion were
estimated using methodology included in the Institute of Transportation Engineers (ITE) Trip Generation
Manual, 10th Edition for Land Use Code (LUC) 813 (Free-Standing Discount Superstore). Adjustments to the
trip generation estimates were made to account for pass-by trips which are made by vehicles that are already
on adjacent streets and make intermediate stops at the site en-route to a primary destination (e.g. on the way
home from work). The resulting net new weekday daily, AM, and PM peak hour trips associated with the
proposed expansion are summarized in Table 1. Detailed trip generation calculations are included in
Attachment C.
RECEIVED
06/09/2020
amorganroth
PLANNING DIVISION
EXHIBIT 7
DocuSign Envelope ID: 1C3D0486-3D78-416B-94DE-E64EA6106C25
Trip Generation Memo
Renton Walmart Expansion
TENW May 23, 2019
Page 2
Table 1
Renton Walmart Expansion – Trip Generation Summary
New Trips Generated
Time Period In Out Total
Weekday Daily 27 26 53
Weekday AM Peak Hour 1 1 2
Weekday PM Peak Hour 2 2 4
As shown in Table 1, the proposed expansion of the existing Walmart is estimated to generate 53 new
weekday daily trips with 2 new trips occurring during the weekday AM peak hour and 4 new trips occurring
during the weekday PM peak hour.
Conclusion
The City of Renton Traffic Impact Analysis Policy Guidelines for New Development includes a 20 peak hour
trip threshold for the requirement of a traffic study. Because the project is estimated to generate less than 20
new weekday AM or PM peak hour trips, a traffic study would not be required for the proposed project per
city guidelines.
If you have any questions regarding the information presented in this memo, please call me at (425) 250-
5003 or email me at chin@tenw.com
cc: Jeff Weeder, Galloway
Jeff Schramm, TENW Planning Manager
Attachments
DocuSign Envelope ID: 1C3D0486-3D78-416B-94DE-E64EA6106C25
Trip Generation Memo
Renton Walmart Expansion
ATTACHMENT A
Site Vicinity
DocuSign Envelope ID: 1C3D0486-3D78-416B-94DE-E64EA6106C25
Trip Generation Memo
Renton Walmart Expansion
ATTACHMENT B
Preliminary Site Plan
DocuSign Envelope ID: 1C3D0486-3D78-416B-94DE-E64EA6106C25
Trip Generation Memo
Renton Walmart Expansion
ATTACHMENT C
Trip Generation Calculations
DocuSign Envelope ID: 1C3D0486-3D78-416B-94DE-E64EA6106C25
ITE
Land Use Units1 LUC2 In Out Trip Rate2 In Out Total
Daily
Proposed Use:
Free-Standing Discount Superstore 1,400 GFA 813 50%50%50.70 36 35 71
Pass-By Trips 3 25%-9 -9 -18
Net New Daily Trips = 27 26 53
AM Peak Hour
Proposed Use:
Free-Standing Discount Superstore 1,400 GFA 813 56%44%1.85 2 1 3
Pass-By Trips 3 21%-1 0 -1
Net New AM Peak Hour Trips = 1 1 2
PM Peak Hour
Proposed Use:
Free-Standing Discount Superstore 1,400 GFA 813 49%51%4.33 3 3 6
Pass-By Trips 3 29%-1 -1 -2
Net New PM Peak Hour Trips = 2 2 4
Notes:
1. GFA = Gross Floor Area.
2. Institute of Transportation Engineers, Trip Generation Manual , 10th Edition.
Renton Walmart Expansion
Trip Generation Summary
Trips Generated
Directional
Distribution
5/24/2019
DocuSign Envelope ID: 1C3D0486-3D78-416B-94DE-E64EA6106C25