The Tennessee Highway Patrol tells News 5 a rock slide blocked U.S. Highway 421 Thursday morning near the county line.
We're told it happened sometime overnight. When they arrived, the road was completed blocked by the fallen rocks.
Troopers have been able to move some of the rocks out of the road, making way for one lane of traffic.
Drivers should expect delays on the highway.
News 5 will continue to gather more information and updates.