SEATAC, Wash. — Heads up to drivers heading south on Interstate 5.
A crash involving a motorcycle and a car has backed up I-5 near SeaTac for about three miles.
Three lanes are blocked and traffic is getting by on an on-ramp and HOV lane.
Backup starts around SR 599.
It’s unclear what caused the crash.
KIRO 7 will have updates as they become available.
There is no estimated time for reopening.