PULASKI CO., Va. (WDBJ7) -- According to VDOT 511, a tractor-trailer accident has caused backup along mile marker 93 on Interstate 81 South.
VDOT says the North left shoulder and left lane are closed and all South lanes are closed. Northbound traffic congestion is at 2.5 miles.
Traffic backups are approximately 2.5 miles.
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