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Semitruck rolls off I-90, troopers believe driver fell asleep behind the wheel

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Courtesy WSP

KITTITAS, Wash. — UPDATE: Troopers say all lanes of westbound I-90 are now open, after a semitruck drove off the roadway Monday morning.

Investigators believe the driver fell asleep behind the wheel and drifted off of I-90, near milepost 115 in Kittitas.

Troopers tell KIRO 7 the driver had to be rescued out of the rig, but suffered only a few minor bumps and bruises. He was taken to an area hospital to make sure he is OK.

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The exact cause of this accident and status of the driver are still unknown.