FOREST PARK-- A man fell off the Harlem Avenue overpass onto the inbound Eisenhower Expressway.
The incident happened just before 3 a.m. Thursday.
A state trooper happened to be making a traffic stop, just a few feet away from where the man fell.
The officer immediately ran into traffic, stopped two semi-trucks, and got the man off the expressway.
The man is reportedly mentally ill.
There's no word yet on his physical condition.
The trooper was not hurt.