Northbound I-405 Weekend Closure: August 7-10

Published on August 04, 2026

Northbound I-405 Closure graphic with highway I-405 grayed out in the background

The Washington State Department of Transportation (WSDOT) will close northbound Interstate 405 from North Southport Drive/Sunset Boulevard NE (Exit 5) to Coal Creek Parkway SE (Exit 10) from 11:30 p.m. Friday, August 7, to 4 a.m. Monday, August 10.

 


Detour Map of closure on NB I-405 rerouting to Duvall and Coal Creek Parkway - blue showing

During the closure, crews will pave, excavate drainage crossings and complete a traffic switch as part of the I-405/Renton to Bellevue Widening and Express Toll Lanes Project. Detour signs will be in place. 

Learn more from WSDOT at wsdot.wa.gov/about/news.

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