This map shows the project limits for Stage 2 of the I-405/I-5 to SR 169 Widening Project.
A view of the Benson Road bridge over I-405. Crews will reconstruct the bridge as part of the project.
View a diagram of the Renton Stage 2 improvements. 
A project rendering of the Renton Stage 2 improvements from the roof of Renton City Hall. Go to our
Flickr page for a larger view of the picture.
Overview
WSDOT is building a new half-diamond interchange on I-405 east of the I-405 / SR 167 interchange at SR 515 (Talbot Road) to improve access to downtown Renton and relieve traffic demand on the I-405 interchanges at SR 167 and SR 169. In the future when additional funding is authorized, it is anticipated that a second half-diamond interchange will be constructed on I-405 west of the I-405 / SR 167 interchange at Lind Avenue. With the completion of a one-way couplet frontage road system to connect the two half-diamond interchanges, access to Renton and I-405 will be greatly improved.
The Stage 2 project also constructs one additional lane in each direction on I-405 between SR 167 and SR 169 and reconstructs the Benson Road Bridge over I-405.
Why is WSDOT
constructing this Project?
The Stage 2 Project will reduce traffic congestion and improve safety and access to Renton, particularly to Talbot Hill and the Soos Creek Plateau. This project is a step forward to address the congestion in the Renton area. This new project is part of a broad long-range plan approved in 2002 by the cities and counties along the corridor, the Federal Highway Administration, Federal Transit Authority, Sound Transit, King County Metro and WSDOT. This vision includes four new freeway lanes, bus rapid transit and other improved transit services, additional HOV direct-access points, vanpools, carpool lanes and more park-and-ride spaces.
The End Result
The completion of the new interchange at SR 515 will improve access to Renton and complete a first step in reducing congestion in the Renton area on I-405. The additional lanes on I-405 will increase the I-405 general purpose roadway capacity.
Project Benefits
- Safety. The new interchange provides enhanced access to Renton from I-405, resulting in reduced congestion-related collisions.
- Congestion relief. The new interchange reduces congestion at I-405 interchanges at SR 167 and SR 169 and for the SR 167 interchange at S 180th St. The new interchange improves access to neighborhoods southeast of Renton. The I-5 to SR 169 Stage 2 Project reduces congestion by adding a northbound and southbound lane, increasing capacity between SR 167 and 169.
- Environment. WSDOT's I-405 Corridor Program team is designing the project to avoid and minimize impacts to the environment.
What is the project timeline?
- 2006: The Environmental Assessment for the Tukwila to Renton Improvement Project began
- October, 2006: The Renton Nickel Improvement Project EA was published.
- April 4, 2008: The Environmental Assessment for the Tukwila to Renton Improvement Project was published.
- Summer 2009: Construction began.
- 2011: Open to traffic.
Financial Information
The information shown below reflects the current proposed budget and schedule. The 2009 Legislature may consider changes to the transportation budget that may include adjustments to some project budgets and schedules.
- 2003 Transportation Account (Nickel funding) - $ 32.0 million
- 2005 Gas Tax (Partnership Funding) - $141.4 million. In 2005, the Washington State Legislature provided funding towards this project by passing the Transportation Partnership Funding package.
- Federal Funding - $1.4 million
- Total Funding Available From All Sources - $175.5 million
How can I get more information?
Contact:
Steve Peer
I-405 Corridor Program
600 108th Avenue NE
Suite 405
Bellevue, WA 98004
425-456-8624
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