Lines are grouped into historic operating divisions. As passenger service declined during the 1950's, many divisions were consolidated.
Detroit District (Detroit-Montpelier)
Huntington District (Montpelier-Peru IN)
Lafayette District (Peru IN-Danville)
Lafayette District (Danville-Decatur)
Springfield District (Decatur-Hannibal)
Brooklyn District (Decatur-East St. Louis)
via TRRA Merchants Bridge (Granite City-St. Louis)
Bloomington District (Gibson City-Bement)
Meredosia Branch (Bluffs-Meredosia-Keokuk)
Lines Sold to Short Line Operators
(Some segments abandoned prior to sale)
Decatur Division (Forrest-Gibson City)
(BLOOMER LINE)
Abandoned Lines
Forrest District (Chicago-Forrest)
Champaign Branch (Sidney-Champaign)
Streator Branch (Forrest-Streator)
Sullivan Branch (Bement-Effingham)
Lines Sold to Short Line Operators
(Some segments abandoned prior to sale)
Montpelier Division (South Milford-Montpelier)
(INDIANA NORTHEASTERN RAILROAD)
Abandoned Lines
Gary District (Chicago-South Milford)
New Jersey Indiana & Illinois Railroad (South Bend-Pine)