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

Upcoming night work

Week of July 14 – July 20 

City of Bellevue: 

• Detention vault site preparation and installation of drainage near Main Street (5 nights: 7/15-7/19) 
• Bridge demolition and drainage crossing work from Coal Creek Parkway Southeast through Southeast 64th Street (1 night: 7/14) 

City of Renton: 

• Pile installation and temporary shoring work near the Cedar River (5 nights: 7/15-7/19) 
• Preparation for shotcrete facing, bench and wall excavation, and soil and proof nail installation for wall 3.30R near the Cedar River (6 nights: 7/15-7/20) 
• Bridge demolition and drainage crossing work from Southeast 64th Street through Sunset Boulevard Northeast (1 night: 7/14) 

Week of July 21 – July 27 

City of Bellevue: 

• Detention vault site preparation and installation of drainage (5 nights: 7/22-7/26) 

City of Renton: 

• Pile installation and temporary shoring work near the Cedar River (5 nights: 7/22-7/26) 
• Preparation for shotcrete facing, bench and wall excavation, and soil and proof nail installation for wall 3.30R near the Cedar River (6 nights: 7/22-7/27)