Illinois State Police said just before 5:15 p.m., a black Volkswagen struck the back of a white Toyota in heavy traffic. The impact caused a chain reaction in the far right lane involving a dark blue Ford and a black Audi.
The Rosemont Fire Department took the driver of the Toyota, a woman, to a local hospital for treatment of non-life threatening injuries.
All four eastbound lanes were closed as the crash was cleared, but have since reopened.
No further information is available, state police said.