Accident causing delays on I-81 in Roanoke County

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ROANOKE COUNTY, Va. (WDBJ7) -- A vehicle accident is causing delays on Interstate 81 in Roanoke County.

According to VDOT the accident happened at mile marker 137.

Right now the south left lane is closed.

Traffic backups are approximately 5 miles.

Stay with WDBJ7 for updates.