Lines are grouped into historic operating divisions. As passenger service declined during the 1950's, many divisions were consolidated.
Burlington Route historically named its subdivisions by the end points.
Chicago & Aurora Subdivision
Aurora & Galesburg Subdivision
Aurora & Savanna Subdivision
Rockford & Flag Center Subdivision
Savanna & North La Crosse Subdivision (Savanna-East Dubuque)
Savanna & North La Crosse Subdivision (East Dubuque-La Crosse)
North La Crosse & St. Croix Subdivision
Galesburg & Quincy Subdivision
Galesburg & Savanna Subdivision
Buda & Rushville Subdivision
Galesburg & Ottumwa Subdivision
Concord & Centralia Subdivision
Centralia & Paducah Subdivision
Beardstown & St. Louis Subdivision