St. Clair County Coroner Dennis Russell identified the victim as Christopher Hayes Swain, 37.
Sgt. Steve Jarrett with the Alabama Department of Public Safety said Swain was killed when the Peterbilt tractor-trailer he was driving left the roadway and struck several trees.
Russell said Swain was pronounced dead at the scene from blunt force trauma.
Russell said an emergency call about the wreck came into St. Clair County Central Dispatch at about 5:48 a.m.
“Nobody actually witnessed the wreck,” Russell said.
He said a passerby spotted the tractor-trailer in the tree line and stopped. The person discovered the body and called 911.
The accident happened about two miles east of Pell City along Interstate 20, between the Pell City and Riverside exits.
The Alabama State Troopers Birmingham Post continues its investigation of the early morning crash.