From the official Facebook page of Roane County Office of Emergency Services & Homeland Security:

“Interstate 40 WESTBOUND 347 to 340 all lanes are back open.

Eastbound is still closed at this time while investigations continue and while personnel continue to remove vehicles from the accidents. Due to all eastbound traffic being diverted from this area, Rockwood City and Highway 70 are heavily congested. Use caution in all these areas.”