Overturned semi near SeaTac causing traffic delays on I-5, I-405, SR 518

SEATAC, Wash. - An overturned semi-truck caused backups on several major roads in the SeaTac/Tukwila area for hours Friday, finally getting cleared up at 8:20 p.m.

The truck rolled over on the eastbound SR 518 on-ramp to southbound I-5 around 3:30 p.m. The crash caused backups on 518, as well as I-5 and I-405.

Washington State Patrol trooper Rick Johnson said there were no injuries.

WSDOT said the crash "will slow you down if you're headed southbound on I-5, northbound on I-5 or northbound on I-405 from anywhere west of the interchange. Use an alternate on-ramp."

Crews had to turn the semi upright, then tow it away from the scene.