RV explodes in flames after crash in Mount Baker tunnel

Eastbound Interstate 90 was blocked Monday afternoon after an RV crashed and exploded into heavy flames.

At about 12:20 p.m., an RV was seen on the WSDOT traffic cameras in the Mount Baker tunnel after it had crashed into the median.

According to the Washington State Patrol, a car was also involved in the collision.

Here are some pictures from the scene. There was another car involved in a collision with this RV. No injuries reported at this time. pic.twitter.com/1avVONFkTY
— Trooper Rick Johnson (@wspd2pio) May 12, 2025

The camera showed flames coming from the front of the vehicle as a person stepped outside. They appeared to be shaken up.

At one point it appeared the vehicle exploded, causing the WSDOT cameras to go black momentarily.

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Once the camera came back, the RV was completely engulfed in flames.

There were no reported injuries.

As of Monday afternoon, the roadway remained fully blocked as crews continued inspections.

UPDATE #4: EB I-90 REMAINS FULLY BLOCKED NEAR RAINIER AVE IN SEATTLE

We understand this closure is frustrating. Crews continue to perform inspections and will reopen the road when it's safe. There is no ETA.
Expect delays & extra congestion on alternate routes. https://t.co/w9aJctbOyD pic.twitter.com/NR1FaS14A5
— WSDOT Traffic (@wsdot_traffic) May 12, 2025