A 35-year-old man sustained injuries in a shooting Saturday afternoon on the Stevenson Expressway, authorities said.
The shooting was reported at 5:15 p.m. on the interstate near Pulaski Road.
The victim suffered critical injuries and was taken to Mount Sinai Hospital, police said.
At 6:30 p.m., all southbound lanes of the expressway remained closed while police continued to investigate.
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Additional information about what led up to the shooting hasn't been released.
The incident marked Saturday's second shooting on a Chicago expressway. A 27-year-old man was shot and killed on the Eisenhower Expressway while driving on the ramp to Austin Boulevard.