Update 7:04 PM: Both lanes on SR 18 just west of I-90 are cleared. WSDOT is still seeing a long backup on EB SR 18, so they say to expect slow travel times for now.
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At approximately 4:15 PM May 28th a tipped over semi truck is causing a back up on SR 18 just west of I-90 (MP 27)
The eastbound & westbound traffic is alternating to pass due to the disabled vehicle.
The Incident Response Team, Tow Assistance, and the State Patrol have arrived on the scene.
Traffic is backed up on to Westbound I90 and Snoqualmie Parkway. Use caution in the area