HomeMy WebLinkAboutTraffic_Study_17.01.11 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: January 11, 2017
TO: Jill Ding
City of Renton
FROM: Spenser Haynie / Jeff Schramm
TENW
SUBJECT: Trip Generation and Impact Fee Estimate for the proposed
28Hundred Residential Project
TENW Project No. 5382
This memorandum summarizes the trip generation and transportation impact fee estimate for the proposed
28Hundred Residential project located in Renton, Washington.
Project Description
The 28Hundred Residential site is located on the northeast corner of the Harrington Avenue NE / NE 12th
Street intersection as shown in the Attachment A vicinity map. The existing site includes a duplex that would
be removed with this project development.
The proposed 28Hundred Residential project would include 12 townhome units. Vehicular access to the site
is proposed via two driveways: one each on NE 12th Street and NE 13th Street. A preliminary site plan is
provided in Attachment B. The project is expected to be occupied in 2018.
Trip Generation
The trip generation estimates for the proposed 28Hundred Residential project were based on methodology
in the Institute of Transportation Engineers (ITE) Trip Generation Manual, 9th edition, for Townhouse (LUC
230). The net new trip generation was calculated by subtracting the trips from the duplex to be removed
from the trips generated by the proposed 12 townhome units. 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
28Hundred Residential – Trip Generation Summary
Net New Trips Generated
Time Period In Out Total
Weekday Daily 40 41 81
Weekday AM Peak Hour 2 5 7
Weekday PM Peak Hour 6 3 9
28Hundred Residential
Trip Generation and Impact Fee Estimate
TENW January 11, 2017
Page 2
Transportation Impact Fee Estimate
The City of Renton requires payment of transportation impact fees to mitigate traffic impacts of new
developments. The CityÊs transportation impact fees are based on the number of dwelling units. Per the Rate
Study for Impact Fees for Transportation, Parks, and Fire Protection (August 26, 2011), the transportation
impact fee is $5,592.71 per multi-family dwelling unit. The proposed 10 net new dwelling unit development
(12 proposed less 2 existing) will have an estimated transportation impact fee of $55,927.10.
If you have any questions regarding the information presented in this memo, please feel free to contact me
at (425) 250-0581 or schramm@tenw.com.
cc: Jeff Haynie, P.E. – Principal
Attachments: A. Vicinity Map
B. Preliminary Site Plan
C. Trip Generation Calculations
28Hundred Residential
Trip Generation and Impact Fee Estimate
ATTACHMENT A
Vicinity Map
28Hundred Residential
Trip Generation and Impact Fee Estimate
ATTACHMENT B
Preliminary Site Plan
28Hundred Residential
Trip Generation and Impact Fee Estimate
ATTACHMENT C
Trip Generation Calculations
DAILY
ITE
Land Use Area Units1 LUC2 In Out In Out Total
Proposed Use:
Townhomes 12 DU 230 eqn 50%50%51 51 102
Less Existing Use:
Duplex 2 DU 230 eqn 50%50%-11 -10 -21
NET NEW DAILY TRIP GENERATION =40 41 81
AM PEAK HOUR
ITE
Land Use Area Units1 LUC2 In Out In Out Total
Proposed Use:
Townhomes 12 DU 230 eqn 17%83%2 7 9
Less Existing Use:
Duplex 2 DU 230 eqn 17%83%0 -2 -2
NET NEW AM PEAK HOUR TRIP GENERATION =2 5 7
PM PEAK HOUR
ITE
Land Use Area Units1 LUC2 In Out In Out Total
Proposed Use:
Townhomes 12 DU 230 eqn 67%33%7 4 11
Less Existing Use:
Duplex 2 DU 230 eqn 67%33%-1 -1 -2
NET NEW PM PEAK HOUR TRIP GENERATION =6 3 9
Notes:
1. DU = Dwelling Units.
2. Institute of Transportation Engineers (ITE) Trip Generation manual 9th edition.
ITE
Trip Rate2
Directional Split Trips Generated
28Hundred Residential
Trip Generation
ITE
Trip Rate2
Directional Split Trips Generated
ITE
Trip Rate2
Directional Split Trips Generated
1/11/2017