Video captured the moment a tree fell down on Interstate 5 near Fife Wednesday afternoon.

KING 5 viewer Radimer Lewis III was driving southbound on I-5 during the afternoon rush hour when the tree crashed onto three lanes of slow moving traffic on the freeway.  The incident was captured on Lewis' dash cam video.

CLICK HERE to watch video

The tree crushed a car, seriously injuring the driver.  She suffered spinal, head and rib injuries and was transported to Harborview Medical Center.

Several southbound lanes of traffic were blocked and traffic was backed up for about an hour until crews removed the tree from the freeway.

WSDOT says high winds caused the tree to topple.