ARRINGTON, Tenn. (WKRN) – A tractor-trailer fire closed State Route 840 East in Williamson County Wednesday morning.

It happened around 4 a.m. near the Horton Highway exit.

Investigators said the engine of a UPS truck caught fire and burned the cab of the truck.

The driver was not hurt in the incident.

Firefighters and rescue crews responded and cleared the scene in two hours.