A truck driver is dead after a UPS semi-tractor slammed into a median wall on the Tri-State tollway early Tuesday morning in suburban Western Springs.

Just after 2:30 a.m., the truck driver was traveling in the southbound lanes of I-294 near 47th Street when the vehicle hit the median and flipped over, police said.

Video showed the cab of the UPS truck completely demolished in the accident before the driver was pulled from the wreckage and pronounced dead at the scene.

UPS Freight confirmed the driver killed was an employee of the company.

"UPS is saddened by the loss of our Freight driver who was involved in an incident last night," the company said in a statement. Our condolences go to his family and loved ones. We are cooperating with local authorities as they investigate the incident."

Illinois State Police were still on the scene hours later trying to determine what caused the fatal accident. The roads were wet Tuesday morning, but it's unknown if the weather was a factor in the crash.

By 6 a.m., the accident was still causing massive backups with lanes blocked in both directions of I-294.

The coroner’s office has yet to release the identity of the victim.