• Project

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.

Timeline
2015 - 2025
Project status
Construction
Funding
$705 million (contractor’s bid amount)
Project hotline

What to expect

Upcoming night work

Week of March 17 – March 23 

City of Bellevue: 

  • In between SR 167 and I-5 install temporary concrete barrier and re-stripe the road. (1 night: 3/17) 
  • Installation of temporary signage and removal of existing sign at Bridge 30W near Coal Creek Parkway. (2 nights: 3/20-3/21) 
  • Bench installation work for bridge 40ETL near Southeast 8th Street. (5 nights: 3/18-3/22) 

 City of Renton: 

  • Install micropiles and falsework near Renton Avenue South. (5 nights: 3/18-3/22) 
  • Bench and wall excavation, soil and proof nail installation, shotcrete installation, proof nail testing for wall 3.30R near Cedar River. (5 nights: 3/18-3/21 and 3/23) 
  • Set blocks and girders and decking work for Bridge 26W near North 44th Street. (3 nights: 3/20-3/22) 

 Week of March 24 – March 30 

City of Bellevue: 

  • 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 with additional pane, strap, and backfill work near Coal Creek Parkway. (4 days/nights: 3/25-3/28) 
  • Barrier demolition work for bridge 40ETL near Southeast 8th Street. (4 nights: 3/25-3/28) 

 City of Renton: 

  • Bench and wall excavation, soil and proof nail installation, and shotcrete installation for wall 3.30R near Cedar River. (4 nights: 3/25-3/28) 
  • Decking work for Bridge 26W near North 44th Street. (5 nights: 3/25-3/29) 

Project improvements will occur in the Renton to Bellevue area along I-405.