The Brief
- Major highway closures across western Washington this weekend will likely cause significant traffic delays and detours.
- Key routes impacted include SR 520, I-5, I-90, I-405, and SR 99, with many closures running from Friday night through early Monday.
- The North Cascades Highway remains closed after a rockslide, with reopening now expected around July 4.
SEATTLE – Drivers across western Washington should prepare for serious travel delays this weekend, as there are several major road closures coming to the region’s busiest highways.
Major sections of State Route 520, I-5, I-405, SR 99 and I-90 off ramps will be affected, so be prepared to take detours and run into traffic backups.
Keep reading for a full list of the road closures to expect for this weekend, May 8-10.
Major traffic disruptions in Seattle this weekend
Eastbound SR 520 from I-5 to Montlake Blvd: From 11 p.m. Friday until 5 a.m. Monday, eastbound SR 520 will close between I-5 and Montlake Boulevard. The closure is necessary for the first major traffic shift of the Portage Bay Bridge and Roanoke Lid Project, as drivers will be moved onto a new temporary ramp once it reopens.
Southbound I-405 in Bellevue: Southbound I-405 will close between Coal Creek Parkway and SR 900/N. Southport Drive from 11:59 p.m. Friday to 4 a.m. Monday. Drivers should expect significant delays in the Bellevue/Newcastle area.…