UPDATE: VDOT reports the accident has cleared.
PREVIOUS: VDOT reports an accident is creating northbound backups on Interstate 81 between the Christiansburg and Elliston exits. The crash involves a truck, and it is blocking one northbound lane near milemarker 128.
FROM VDOT: On I-81 at mile marker 128 in the County of Montgomery, motorists can expect delays due to a tractor trailer accident. The North left shoulder and left lane are closed.