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TIB Project Information

City of Issaquah's 12th Avenue NW

8-1-108(012)-1

8-1-108(012)-1
12th Avenue NW

SR 900 to Lake Dr

FY 2023 Urban Arterial Program
Current Phase : Audit
Total TIB Funding : $3,000,000

County: King   |   Legislative District: 5   |   Project Length: 0.22   |   TIB Engineer: Greg Armstrong   |   Last Payment Date: 03/17/2025

Project Information

Lead Agency ISSAQUAH
Funding Year 2023
Program UAP
Current Phase Audit
Legislative District 5
Congressional District 8
Federal Route Number 1321
Project Length 0.22 mi.
ADT 5,600
Functional Class Collector
Type of Work Minor Widening
Project Contact Jim Jacobe
Contact Email jamesj@issaquahwa.gov
TIB Engineer Greg Armstrong
Last Payment Date 03/17/2025
Cultural Resource Assessment Not Required

Project Schedule

  Target Date Actual Date
Project Selection Date   11/19/2021
Delayed Project Date 01/01/2023  
DAHP Assessment Date  
Predesign Approval
Design Approval 02/10/2022 02/10/2022
Bid Auth. Approval 01/10/2023 01/04/2023
Construction Approval 02/06/2023 02/13/2023
Project Closeout 02/28/2025 03/06/2025
Audit Date   03/17/2025
Withdrawn Date  

Project Funding

TIB Funds Project Costs
Environmental Study 0 0
Design Study 0 0
Total Predesign 0 0
     
Special Study 0 0
Design 0 0
Right of Way 0 0
Total Design 0 0
     
Construction Engineering 336,711 1,127,518
Construction Contract 2,650,360 4,247,517
Other Construction 12,929 55,000
Total Construction 3,000,000 5,430,035
     
Total TIB Funding 3,000,000 5,430,035

Local Funding Partners

Funding Amount Percent
ISSAQUAH 0 0.0%
WSDOT Funding 0 0.0%
Costco  2,430,035 44.8%
 
 
 
 
 
 
 
Total Local Funding 2,430,035 44.8%

Project Description

This project will construct an additional left turn lane from westbound 12th Avenue to southbound SR 900 and an exclusive right turn lane from northbound SR 900 to eastbound 12th Avenue. The added turning capacity will reduce congestion by decreasing delay and queue lengths. The reduced queue lengths as a result of this project will help minimizing frequent rear end collisions for northbound and westbound traffic and collisions at the PCC driveway, due to left turning queue that extends past several commercial driveways. The project will eliminate the permissive portion of the left turn phase from westbound 12th Ave to southbound SR 900, which is another frequent collision at this intersection.

Project Pictures

Project Delays

Delay Type Resolution Date Comments

No delayed project history.

Project Payments