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Update at 1:32: All southbound lanes on I-5 at West Street in Chehalis are open, but a 7-mile backup remains.

A semi-truck that crashed near milepost 78 in the southbound lanes of I-5 in Chehalis early Thursday morning was driving northbound at the time of the crash, according to trooper Will Finn.

The truck crossed over the center barrier and rolled.

Chehalis – SB I5/MP79 – Semi truck was NB before crossing over center barrier & rolling. No ETA for opening.Detour is Chamber Way.

— Trooper Will Finn (@wspd5pio)

The driver of the semi-truck was airlifted to a hospital after the crash. Finn says the crash sent debris into the northbound lanes.

A total of three vehicles were involved. One person was reportedly trapped.