Car crash shuts down 3 lanes of westbound I-90 in Seattle, causes major backups

Car crash in the I-90 tunnel has shut down three westbound lanes. (WSDOT)

Westbound traffic is backed up all the way to Mercer Island after a car crash near the I-90 tunnel in Seattle, which at one point blocked the three left lanes.

The Washington State Department of Transportation reports the crash happened in the tunnel, just east of Rainier Ave S.

Seattle Police and Seattle Fire are on scene investigating.

Officials say the crash was cleared around 4:18 p.m., but traffic is still backed up for miles.

It is not known what led up to the collision, how many people were involved or if there are any injuries.

Drivers should expect major delays in the area and drive with caution.

This is a developing story, check back for updates.

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