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Crash on Interstate 81 causing massive backup

A look at a VDOT camera at mile marker 132 at 3:23 p.m. (Copyright by WSLS - All rights reserved)

ROANOKE COUNTY (WSLS 10) - A crash on Interstate 81 is causing a major backup.

At mile marker 135.4 the north left lane is closed, according to the Virginia Department of Transportation.

As of 3:21 p.m., traffic backups are about 10 miles.