The accident apparently happened near Old River Road in Fairfield County, close to mile marker 42.
(WLTX) -- Interstate 77 southbound is backed up with traffic after a tractor trailer caught fire Friday afternoon.
The accident apparently happened near Old River Road in Fairfield County, close to mile marker 42.
Witnesses say traffic is backed up about five miles, and officials are urging drivers to find an alternate route.
Details are limited as to what caused the fire.