Tractor-trailer fire cleared on I-81 North near Dixie Caverns

ROANOKE COUNTY, Va.UPDATE

All lanes are now open.

UPDATE

One northbound lane is now open. The fire is extinguished. 

No one is hurt. 

ORIGINAL STORY 

Crews are working to extinguish a tractor-trailer fire that's causing a traffic issue on I-81 North on Tuesday morning. 

All northbound lanes are blocked at mile marker 132, which is near the Dixie Caverns exit in Roanoke County. 

The call came in just after 4 a.m. 

Drivers should avoid the area. 

Roanoke County emergency crews and Virginia State Police are responding. 

Check back for more details.