A tractor trailer fire shuts down traffic on Interstate 81.
Virginia State Police tells us the fire started in the truck's engine around seven Thursday night.
The driver pulled over into the emergency lane near southbound mile marker 31 and called fire fighters.
VSP says the driver did get out safely, but for a short time, both lanes of traffic were closed, with the right lane remaining closed for 45 minutes.
VSP says the road was reopened and traffic is moving smoothly.