MAPLE VALLEY, Wash. — The Washington State Department of Transportation (WSDOT) says a crash has blocked the eastbound lanes of State Route 18 near the intersection of State Route 169 in Maple Valley.
Three people were seriously injured and taken to a Seattle hospital, according to Puget Sound Fire.
Westbound lanes are back open but there is no estimate when the eastbound lanes will reopen.
WSDOT posted that backups are extensive and traffic is being rerouted at 256th Street.
This is a developing story.