Sergeant Anthony Millison was killed when he fell from the Thornton-Blue Island Overpass on I-57, in Dixmoor, while assisting at the scene of an accident.

The overpass was extremely icy due to inclement weather. He was responding to another accident on the overpass when his vehicle slid on the ice and crashed into a barrier. Despite being injured, he began tending to other motorists who had also crashed. As he assisted the motorists he noticed another vehicle sliding towards him. He attempted to jump out of its way by holding onto the overpass rail, but fell to the concrete 47-feet below.

He was transported to St. Francis Hospital where he was pronounced dead.

Sergeant Millison was a U.S. Air Force veteran and had served with the Illinois State Police for 10 years. He had previously served with the Illinois Department of Corrections for eight years. Trooper Millison was posthumously promoted to the rank of sergeant.

He is survived by his wife and son.