MONTGOMERY COUNTY, Va. – UPDATE
The area has been cleared, according to VDOT.
Traffic is now backed up for about four miles.
Authorities said that no one was hurt in this incident.
Christiansburg crews were dispatched just after 12:30 p.m. Monday. When they arrived at the scene, they said they found the driver of the tractor-trailer trying to unload the vehicles he was hauling.
No one was hurt in this incident, authorities say.
Officials said drivers should expect significant delays for several hours.
A vehicle fire is causing delays on I-81 South in Montgomery County, according to VDOT.
Authorities said that the incident happened near mile marker 120.
As of 1:24 p.m., the southbound center lane, right lane and right shoulder are closed.
Stick with 10 News as this breaking news story develops.