One woman was hurt. She was airlifted to the hospital. She was a passenger in a car that veered off the road and crashed onto an electrical box on I-57 near Markham. She was taken to Advocate Christ Medical Center in Oak Lawn with non-life-threatening injuries, he said.
Police say the man driving the car fell asleep while behind the wheel just north of Kedzie Avenue near a construction area for a new interchange with the Tri-State Tollway, a state trooper said.
The crash happened in the inbound lanes of the expressway about 12:30 a.m. and shut down both sides of I-57 for a short time as officials worked to shut off the electricity to the box and extricate an injured passenger, an Illinois State Police District Chicago trooper said.
The vehicle then struck a tree and landed on a junction box, which is a container for electrical connections used in the nearby construction, the trooper said.
The Sun-Times Media Wire contributed to this report.
