Lines are grouped into historic operating divisions. As passenger service declined during the 1950's, many divisions were consolidated.
Main Line (Chicago-Whiting)
Main Line (Whiting-Tolleston)
SC&S Branch (Colehour Jct.-Hegewisch-Bernice)
Main Line (Chicago-Bernice)
Englewood Connecting Line (59th Street Yard-Englewood)
Main Line (Xenia-Cincinnati)
Richmond Branch (Logansport-Richmond)
Richmond Branch (Richmond-Cincinnati)
Fort Wayne Branch (Fort Wayne-Richmond)
Lebanon Branch (Cincinnati-Lebanon-Dayton)
Main Line (Cleveland-Bayard)
Tuscarawas Branch (Bayard-New Philadelphia)
Akron Branch (Hudson-Columbus)
Main Line (Columbus-Xenia-Dayton-Richmond)
Main Line (Columbus-Bradford-Richmond)
Main Line (Richmond-Indianapolis)
Main Line (Crestline-Pittsburgh)
Bayard Branch (Fairhope-Bayard-Rochester PA)
Main Line (Niles Jct.-Youngstown-Rochester PA)
PY&A Branch (Niles-Ashtabula)
Main Line (Tolleston-Fort Wayne)
Main Line (Fort Wayne-Crestline)
Butler Branch (Logansport-Butler)
Main Line (Indiana)
Main Line (Michigan)
Main Line (Bernice-Logansport)
Main Line (Logansport-Indiana State Line)
Main Line (Ohio State Line-Bradford)
Effner Branch (Logansport-Effner)
South Bend Branch (Logansport-South Bend)
Muncie Branch (Muncie-Converse)
Main Line (Weirton-Newark)
River Line (Yellow Creek-Powhatan)
Sandusky Branch (Columbus-Sandusky)