Tuesday, June 11, 2024

I-405/SR 167 Corridor celebrations highlight multimodal vision coming to life

Recently we celebrated not one but two milestones for the I-405/SR 167 Corridor Program. Monday, May 20 was an opportunity to mark the opening of one project and the start of another on the same day. These achievements provided an opportunity to celebrate the progress we are making toward a multimodal transportation corridor. By multimodal, we mean improvements that will help all users whether they take transit, bike, roll, walk or drive. These improvements:

  • address aging infrastructure
  • correct fish barriers by opening upstream fish habitat
  • connect communities, freight and Regional Growth Centers throughout the corridor

We have worked with our partners over the last 20 years to bring these improvements to life. Watch the video below to see how we marked these milestones with agency and elected officials, corridor partners, community members, contractors and the project teams.

What does this mean for you?

The opening of the new interchange in Kirkland means you can access I-405 and the Totem Lake area, a Regional Growth Center, more easily. The interchange has reduced pressure on nearby interchanges that were seeing increased traffic due to continued regional growth. Construction began in spring 2022 on the I-405/Northeast 132nd Street Interchange. These improvements are now open to traffic, including:

  • new on- and off-ramps to I-405 at Northeast 132nd Street.
  • two new roundabouts for better traffic flow.
  • enhancements for bicyclists and pedestrians.
  • improved drainage, water quality and fish barrier correction to open up over a half mile of new upstream fish habitat.
Roundabouts and on- and off-ramps at the new I-405/Northeast 132nd Street interchange.
Photo of new improvements at the I-405/Northeast 132nd Street interchange.

And as you can tell by our dual celebrations, we are not done yet. The I-405/Brickyard to SR 527 Improvement Project is just getting started. We recently shared a blog about the improvements which include key connections to Sound Transit's new bus rapid transit service. The groundbreaking ceremony signaled the start of heavy construction on this project which will continue through 2028.

Multimodal vision

The I-405/SR 167 Corridor Program is guided by the I-405 Master Plan and SR 167 Master Plan. These plans describe our comprehensive strategy to:

  • reduce traffic congestion
  • improve mobility and safety performance 
  • address aging and failing infrastructure, including seismic resiliency
  • accommodate planned regional growth
  • enhance quality of life for the environment and communities we serve in the 50+-mile corridor
  • correct fish barriers and create new habitat area
Working together with partner agencies, these plans will help us manage traffic demand through improvements that will help all users. Key parts of this plan include expanding the express toll lane (ETL) system to a dual ETL system and building the infrastructure to support bus rapid transit service. The program also improves community connections to the corridor for bicyclists and pedestrians. Working together, these improvements increase options for all users and provide a more reliable trip.