ROANOKE COUNTY, Va. – UPDATE
This crash has been cleared, according to VDOT.
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ORIGINAL STORY
Drivers heading north on Interstate 81 in Roanoke County can expect delays due to a tractor-trailer crash, according to VDOT.
Authorities said the crash happened at mile marker 136.
As of 4:45 p.m., the north left shoulder and left lane were closed, VDOT said. Traffic backups are approximately 2 miles.