An accident on Snoqualmie Pass has left one injured and several vehicles including an ambulance totaled.

According to WSP's John Bryant on his Twitter account, Snoqualmie Pass was closed going both north and south was closed for several hours due to a four-vehicle accident starting late last night on October 20th

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We don't have details yet on how the ambulance ended up in the wreck but we do have some details on what caused the accident.

courtesy of trooper john bryant

According to reports from the Washington State Patrol, 4 vehicles were involved after a semi-truck headed westbound struck the concrete jersey barriers near milepost 66.

The barriers were pushed into the eastbound lanes.

This caused three eastbound vehicles to collide with the barriers and each other. The semi-truck (carrying 62K pounds) rolled over on its side perpendicular to the westbound lanes.

Luckily, one minor injury was reported.

Traffic was stopped near Easton on the westbound side of the freeway and traffic was stopped northbound near North Bend.

According to the WSP, both sides of I-90 are now open. As we get more details on the accident, we'll keep you updated.

You can read more details on the accident here.

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