The state Department of Transportation's I-405 Renton to Bellevue Widening and Express Toll Lanes project will add new capacity to one of the state's most congested sections of highway. In general, it will add one new lane in each direction. City Transportation Department staff coordinate with WSDOT to address construction impacts on Bellevue streets and other issues.
Main Street Bridge closure
As part of the I-405 Widening project, Main Street was closed beginning June 13, 2022 -- from 112th to 116th Avenue NE -- for up to 5 months. Crews demolished the old bridge over I-405 and are building a new bridge. Signs direct travelers to the detour route on nearby NE 4th Street. Travelers should expect increased congestion and delays in the area. Detour map.
Background information
With the existing high occupancy vehicle lanes, the I-405 Renton to Bellevue project will create a dual express toll lane system between SR 167 in Renton and Northeast 6th Street in Bellevue. Combined with the existing express toll lanes between Bellevue and Lynnwood, and with the SR 167 HOT lanes, the end result will be a 40-mile system of express toll lanes.
In Bellevue, WSDOT will build a new southbound auxiliary lane in the I-90 to 112th Avenue Southeast vicinity, improve the Coal Creek Parkway interchange and reconstruct the bridges at Main Street and at 112th Avenue Southeast. Also, WSDOT will build parts of the Eastrail regional pedestrian and bicycle trail, including a new crossing over I-405 at the site of the former Wilburton rail bridge, in partnership with King County.
- WSDOT project webpage
- Project map
Timeline
- 2024: Open to traffic
- 2019: Start of construction
- 2015-2019: Preliminary engineering
WSDOT contact
I-405/SR 167 Corridor Communications
425-456-8624 or email I405SR167Program@wsdot.wa.gov