ROANOKE COUNTY, Va. – UPDATE:
The crash has been cleared, according to VDOT.
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ORIGINAL STORY:
A tractor-trailer crash is causing traffic delays on Interstate 81 in Roanoke County, according to VDOT.
Authorities said the crash happened at mile marker 138.9.
As of 8:07 p.m., the north right lane and right shoulder are closed.