The crash happened at about 4:32 a.m. on the inbound lanes of I-94 near 75th Street, Illinois State Police said.
Police said they responded to a crash involving a Black Chevrolet SUV and a pedestrian.
The pedestrian died at the scene, ISP said.
No other details about the victim were released.
As of 7 a.m. multiple lanes were closed for the investigation.
Traffic was able to get through, however, there were extensive delays on Monday.
All lanes reopened just before 9 a.m., ISP said.