Main Street Bridge across Interstate 405 in downtown Bellevue will be closed for up to five months
BELLEVUE – Travelers in downtown Bellevue should prepare for a long-term bridge closure starting the morning of Monday, June 13. The Main Street Bridge across Interstate 405 between 112th Avenue Northeast and 116th Avenue Northeast will be closed for potentially up to five months while crews demolish and replace the bridge.
The bridge closure is the first part of a larger closure that will occur later next week. The larger closure will be a full weekend highway closure of all lanes on I-405 between Northeast Fourth Street and Southeast Eighth Street in downtown Bellevue. The highway closure is necessary for crews to safely demolish the Main Street Bridge.
The highway closure will begin Friday night, June 17 starting at 10 p.m. with all lanes and ramps reopening to traffic on Monday morning, June 20. This closure could cause significant delays throughout the weekend. The Washington State Department of Transportation is encouraging travelers to plan ahead and prepare for detour routes.
Long-term Main Street closure details
As early as Monday, June 13, the Main Street Bridge across I-405 will be closed for up to five months while crews construct a new bridge. Signs will direct drivers, pedestrians and bicyclists to nearby detours. Travelers should expect increased congestion in the area. Crews will fully close Main Street between 112th Avenue NE and 116th Avenue NE. A signed detour will be in place to Northeast 4th Street and drivers may choose alternative detour routes.
Full closure details
From 10 p.m. Friday, June 17, to 5 a.m. Monday, June 20, crews will demolish the Main Street Bridge across I-405 in order to replace it to accommodate widening I-405 as part of the Renton to Bellevue Projects. Crews will fully close:
- All lanes of I-405 between Southeast Eighth Street and Northeast Fourth Street.
- The northbound I-405 off-ramp to Southeast Eighth Street.
- The southbound I-405 off-ramp to Northeast Fourth Street.
Detour routes
Detour routes have been established where possible, but travelers should expect heavier-than-normal traffic along those routes during the closures.
To help avoid congestion and keep traffic flowing travelers can:
- Allow extra time for travel.
- Take alternate routes.
- Consider taking public transportation or carpooling.
- If possible, reschedule discretionary trips.
- Travel early in the morning or late in the evenings when traffic volumes tend to be lower.
This work is part of the I-405, Renton to Bellevue Widening and Express Toll Lanes Project, which will build one new lane in each direction between State Route 167 in Renton and Northeast Sixth Street in Bellevue.