Northbound I-405 in Bellevue will be fully closed nightly from Southeast Eighth Street to Northeast Fourth Street from 11 p.m. to 4:30 a.m., beginning Monday, March 10 to Thursday, March 13. Lane reductions will start from Lake Washington Boulevard Southeast. Crews will replace sign bridges on northbound I-405 and install conduits on Main Street Bridge. A signed detour will be in place.
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
Full nightly closures of northbound I-405 in Bellevue for replacing sign bridges and conduit installation, March 10-13
Travelers should plan for full nightly closures of northbound Interstate 405 in Bellevue from March 10-13. Contractor crews will be replacing sign bridges on northbound I-405 and installing conduits under Main Street Bridge.
Northbound I-405 closure details
Northbound I-405 in Bellevue will be closed nightly from Southeast Eighth Street to Northeast Fourth Street from 11 p.m. to 4:30 a.m., beginning Monday, March 10 to Thursday, March 13. Lane reductions will start from Lake Washington Boulevard Southeast. The following ramps will also be closed:
- Southeast Eighth Street on-ramp
- Northeast Fourth Street on- and off-ramps (Exit 13)
Main Street Bridge will also be closed to traffic during this time. A signed detour will be in place.
Detour routes cannot accommodate normal traffic volumes, so travelers are advised to “know before you go,” travel during off-peak hours or, if possible, delay discretionary travel to help minimize backups.
Check out the WSDOT real-time travel map for up-to-date information. If you have any questions and/or you would like to sign up for project updates, please email I405SR167Program@wsdot.wa.gov. Stay informed by subscribing to WSDOT updates for King County.
Upcoming night work
Week of March 9 – March 15
City of Bellevue:
- Survey and TC on 112th Avenue Southeast for ST-69 and ST-68 utility relocations (1 night: 3/13)
- Barrier demolition and deck overhang installation (4 nights: 3/10-3/13)
- Drainage installation for the roadway (4 nights: 3/10-3/13)
City of Newcastle:
- No night work scheduled in this period
City of Renton:
- No night work scheduled in this period
Week of March 15 – March 22
City of Bellevue:
- Survey and TC on 112th Avenue Southeast for ST-69 and ST-68 utility relocations (5 nights: 3/17-3/21)
- Sign bridge foundation construction (1 night: 3/19)
- Drainage installation (4 nights: 3/17-3/20)
City of Newcastle:
- Sign bridge foundation construction (1 night: 3/17)
City of Renton:
- No night work scheduled in this period
Project improvements will occur in the Renton to Bellevue area along I-405.
