Update 11:16 am:

(WBIR) Officials reopened one northbound lane on I-81 in Hamblen County after a semi caught fire near mile marker 8.

Update 10:45 am:

(WBIR) People are allowed to return to home after a semi fire on Interstate 81 in Hamblen County forced crews to evacuate a half-mile radius around the scene.

A tractor trailer was hauling corrosive material when it caught fire near mile marker 8 at about 7:30 a.m. Wednesday. Officials evacuated at total of five house and led 10 people to safety. A couple hours later, authorities allowed people to return home.

Officials reopened the southbound lanes shortly before 9 a.m. But authorities said they expect the northbound lanes to remain closed until 11:45 a.m. at the earliest as crews remove materials from the semi.

The truck was carrying a corrosive material called Ethanolamine.

The fire happened about a half mile from the location of a fire last week that shut down the road.

No word if anyone was injured.

Update 9 am:

(WBIR) Crews are evacuating a half-mile radius around a tractor trailer fire on Interstate 81 in Hamblen County, according to a county dispatcher.

Shortly before 9 a.m., officials reopened the southbound lanes of I-81 near mile marker 8. Northbound lanes remain closed.

A Hamblen County dispatcher said the semi was carrying hazardous material when it caught fire. No word on what type of material the vehicle was hauling. We don't know if anyone was injured in the incident.

TDOT estimates that crews will clear the crash by 10 a.m.

Previous Story:

(WBIR) Officials have shut down a section of Interstate 81 in both directions after a tractor trailer caught on fire, according to a Hamblen County dispatcher.

The Tennessee Department of Transportation said the cargo fire was reported at 7:30 a.m. Wednesday near mile marker 10. TDOT expects crews to clear the scene by 10 a.m.

Crews are diverting both southbound and northbound traffic.