Tennessee Highway Patrol said the truck overturned at about 5:30 a.m. off the right shoulder of the westbound lane of I-40 near mile marker 240.
No further information was immediately available. Troopers said a preliminary report would be released once it’s completed.
At about 3 p.m., troopers and other emergency crews had cleared the wrecked truck. One lane of I-40 westbound previously closed until that time was reopened to traffic. The wreck caused traffic delays for much of the day.