I-405/Renton to Bellevue Widening and Express Toll Lanes Project

Project overview

Travelers on Interstate 405 between Renton and Bellevue experience one of the state’s worst commutes. The I-405 Renton to Bellevue Widening and Express Toll Lanes project includes multimodal transportation and safety improvements to offer more reliable travel choices and keep drivers, transit riders and freight moving.

The Renton to Bellevue project will add new capacity to create a two-lane ETL system between SR 167 in Renton and Northeast Sixth Street in Bellevue. In general, the project will add one new lane in each direction and combine the existing HOV lane with the new lane to create a dual ETL system.

The new ETLs will connect to the existing express toll lane system between Bellevue and Lynnwood, as well as the SR 167 HOT lanes via the I-405/SR 167 Interchange Direct Connector, to create a 40-mile ETL system. This project is designed to improve speeds and trip reliability for all travelers and support the new I-405 Bus Rapid Transit (BRT) line between Lynnwood and Tukwila included in the voter-approved Sound Transit 3 package.

What to expect

Southbound I-405 lane reductions and ramp closures

Up to two right lanes on southbound I-405 between Northeast Sixth Street and I-90 will be closed from 11 p.m. Friday, April 19 to 5 a.m. Monday, April 22. The southbound I-405 on and off-ramps at Southeast Eighth Street will also be closed. Crews will work to repair the pavement in the closure area. 

Drivers are encouraged to reduce speeds while traveling through the work zone for the safety of our crews. For the most up-to-date information about travel impacts, check out our real-time travel map. We also encourage people to stay informed by subscribing to our email updates or calling our construction hotline with questions, concerns or for more information at 425-354-3232.

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Upcoming night work

Week of April 14 – April 20 

City of Bellevue: 

• Installation of an access road and temporary bench near Coal Creek Parkway (2 nights: 4/15-4/16) 
• Construction of geosynthetic layers for Hilfiker wall for bridge 30W, construction of geosynthetic layers and backfill work for Hilfiker walls 10.18R-A and 10.20GL near Coal Creek Parkway (3 nights: 4/15-4/16 and 4/18) 
• Drilling near Southeast Eighth Street (4 nights: 4/15-4/18) 

City of Renton 

• Bench and wall excavation, soil and proof nail installation, and shotcrete facing installation for wall 3.30R near the Cedar River (4 nights: 4/15-4/16 and 4/18-4/19) 
• Soil nail installation, wall demolition, and bench prep work for wall 4.40R near Sunset Boulevard Northeast (4 nights: 4/15-4/17 and 4/20) 
• Panel, strap, and backfill work and storm drain installation for wall 4.52L near Sunset Boulevard North (6 nights: 4/15-4/20) 
• Drainage installation for wall 6.50R near Northeast 30th Street (4 nights: 4/15-4/18) 

 

Week of April 21 – April 27 

City of Bellevue: 

• Installation of an access road and temporary bench near Coal Creek Parkway (4 nights: 4/22-4/25) 
• Construction of geosynthetic layers for Hilfiker wall for bridge 30W, construction of geosynthetic layers and backfill work for Hilfiker walls 10.18R-A and 10.20GL near Coal Creek Parkway (4 nights: 4/22-4/25) 
• Drainage installation near Coal Creek (4 nights: 4/22-4/25) 
• Installation of bores and fiber re-route near bridge 40ETL (4 nights: 4/22-4/25) 
• Drilling near Southeast Eighth Street (1 night: 4/22) 

City of Renton: 

• Drilling near Talbot Road South (3 nights: 4/23-4/25) 
• Bench and wall excavation, proof nail testing, and shotcrete facing installation for wall 3.30R near Cedar River (3 nights: 4/22-4/24) 
• Installation of soil and proof nails and bench prep work for wall 4.40R near Sunset Boulevard Northeast (4 nights: 4/22-4/25) 
• Panel, strap, and backfill work for wall 4.52L near Sunset Boulevard Northeast (6 nights: 4/22-4/27) 
• Drainage installation for wall 6.50R near Northeast 30th Street (4 nights: 4/22-4/25)