A fatal crash on state Highway 503 near Rock Creek Road blocked all lanes for several hours Thursday morning.
At least one person was killed in the crash, which happened shortly after 6 a.m.
During the road closure, southbound traffic was detoured on 319th Street to 142nd Avenue and back to Highway 503, Washington State Patrol Trooper Will Finn said on Twitter. Northbound traffic was flagged through the southbound lanes.
The crash was cleared shortly after 10:30 a.m., according to the Washington State Department of Transportation.
The State Patrol is investigating.