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Transportation Engineering NorthWest
Transportation Planning | Design | Traffic Impact & Operations
11400 SE 8th Street Suite 200, Bellevue, WA 98004 | Office (425) 889-6747
MEMORANDUM
DATE: October 15, 2019
TO: Jill Ding
City of Renton
FROM: Amy Wasserman
TENW
SUBJECT: Renton Office – Trip Generation
PRE17-000639
TENW Project No. 5999
This memorandum summarizes the preliminary traffic information for the proposed Renton Office project
located at 1625 Duvall Ave NE in Renton, Washington. This memo includes a project description and trip
generation estimate. We are requesting your review and approval of this information and confirmation that
a traffic impact analysis will not be required for this project.
Project Description
The Rental Office site is located on the southwest corner of Duvall Ave NE and NE 17th Street (1625 Duvall
Ave NE, see site vicinity map in Attachment A). The proposed project would include a new 3,000 square
foot (SF) building to be used as general office. The existing site includes a 2,370 SF single family home that
has been converted for use as an office building, which would be removed with the proposed project. The
project proposes a driveway on NE 17th Street that would provide access to 13 on-site parking stalls. A
preliminary site plan is provided in Attachment B. The project is expected to be occupied in 2020.
Trip Generation
The trip generation estimates for the proposed and existing uses were based on methodology documented in
the Institute of Transportation Engineers (ITE) Trip Generation Manual, 10th edition, for Land Use Code (LUC)
712 (Small Office Building). The net new trip generation was calculated by subtracting the trips from the
existing office to be removed from the trips generated by the proposed office. The resulting net new weekday
daily, AM and PM peak hour trips are summarized in Table 1. A detailed trip generation estimate is included
in Attachment C.
Table 1
Trip Generation Summary
Net New Trips Generated
Time Period In Out Total
Weekday Daily 5 6 11
Weekday AM Peak Hour 1 0 1
Weekday PM Peak Hour 0 1 1
Renton Office
Trip Generation Memorandum
TENW October 15, 2019
Page 2
As shown in Table 1, the proposed project is estimated to generate 11 net new weekday daily trips with 1
net new trip occurring during the weekday AM peak hour (1 entering, 0 exiting), and 1 net new trip occurring
during the weekday PM peak hour (0 entering, 1 exiting).
Next Steps
The proposed Renton Office project would generate less than 20 net new trips during the weekday AM and
PM peak hours. Therefore, based on the CityÊs guidelines, no additional traffic analysis is required for this
development. We look forward to your review and approval of our trip generation estimates and consensus
that no additional traffic analysis is necessary.
If you have any questions, please feel free to contact me at (425) 466-7072 or amy@tenw.com.
cc: Ben Hruska, Broderick Architects
Attachments
Renton Office
Trip Generation Memorandum
ATTACHMENT A
Vicinity Map
Renton Office
Trip Generation Memorandum
ATTACHMENT B
Preliminary Site Plan
Renton Office
Trip Generation Memorandum
ATTACHMENT C
Trip Generation Estimate
ITE
Land Use Units 1 LUC 2 In Out In Out Total
Daily
Proposed Use:
Office (Small Office Building)3,000 SF 712 50%50%16.19 24 25 49
Less Existing Use:
Office (Small Office Building)2,370 SF 712 50%50%16.19 -19 -19 -38
Net New Daily Trips = 5 6 11
AM Peak Hour
Proposed Use:
Office (Small Office Building)3,000 SF 712 83%17%1.92 5 1 6
Less Existing Use:
Office (Small Office Building)2,370 SF 712 83%17%1.92 -4 -1 -5
Net New AM Peak Hour Trips = 1 0 1
PM Peak Hour
Proposed Use:
Office (Small Office Building)3,000 SF 712 32%68%2.45 2 5 7
Less Existing Use:
Office (Small Office Building)2,370 SF 712 32%68%2.45 -2 -4 -6
Net New PM Peak Hour Trips = 0 1 1
Notes:
1 SF = Gross Square Feet.
2 Institute of Transportation Engineers, Trip Generation Manual, 10th edition Land Use Code.
Renton Office
Weekday Trip Generation Summary
Directional Distribution Trips GeneratedTrip Rate or
Equation