(Chicago Skyway, 2458', 1958) across Calumet River in Chicago, Cook County, IL. On I90 (Chicago Skyway) 1.5 miles NW of the intersection with US12/20 at the IL/IN border. Toll. (N41 43.065 W87 32.575) Photos by Mark Comstock John & Barb Gosling 2-4-24.