Elgin Subdivision (Chicago-Elgin)
C&M Subdivision (Chicago-Rondout)
Fox Lake Subdivision (Rondout-Fox Lake)
Rock Island District (Chicago to Joliet)
Rock Island District (Beverly Branch)
Southwest Sub District (Chicago to 74th Street)
Southwest Sub District (74th Street to Manhattan)
Electric District (Chicago to University Park)
Electric District (South Chicago Branch)
Electric District (Blue Island Branch)