Interurban line:
Aurora-De Kalb (electrified 1910)
Abandoned 1923
Interurban line:
Harvard-Fontana (completed 1899)
Abandoned 1930
Interurban lines:
Joliet-Morris (constructed 1912, discontinued 1934)
Morris-Seneca (constructed 1909, discontinued 1934)
Seneca-Marseilles (constructed 1906, discontinued 1934)
Marseilles-Spring Valley (constructed 1902, discontinued 1934)
Spring Valley-Ladd (constructed 1902, discontinued 1924)
Spring Valley-Depue (constructed 1906, discontinued 1934)
Depue-Princeton (constructed 1906, discontinued 1929)
Ottawa-Streator (constructed 1908, discontinued 1929)
Local service: La Salle/Peru, Ottawa, Princeton
Competing bus service operated by Santa Fe Trail Transportation/Santa Fe Trailways.
Controlled after 1913 by Union Railway Gas & Electric Co.
Interurban line:
De Kalb-Sycamore (completed 1902)
Abandoned 1924
Interurban line:
Elgin-Belvidere (completed 1907)
Abandoned 1930
Competing bus service operated by Northland Greyhound Lines.
Interurban line:
Yorkville-Morris (completed 1911)
Abandoned 1931
Interurban line:
Joliet-Aurora (completed 1904)
Abandoned 1924
Replacement bus service was operated by Joliet-Aurora Transit Lines, discontinued around 1969.
Interurban line:
Joliet-Chicago Heights (completed 1909)
Abandoned 1923
Replacement bus service was operated by Gold Star Line, discontinued in early 1960's.
Incorporated in 1902 as Galesburg & Kewaunee Railway, reorganized 1924 as Kewaunee & Galva Railway.
Interurban line:
Kewaunee-Galva (completed 1906)
Abandoned 1932
Incorporated in 1901 as Northern Illinois Electric Railway, reorganized 1914 as Lee County Central Electric Railway.
Interurban lines:
Lee Center-Amboy (constructed 1910, discontinued 1915)
Lee Center-Middlebury (constructed 1912, discontinued 1915)
Rockford & Belvidere Electric Railway Co.
Rockford Beloit & Janesville Railway Co.
Rockford & Freeport Railway Co.
Controlled 1911-1926 by Union Railway Gas & Electric Co.
Interurban lines:
Rockford-Belvidere (constructed 1902, discontinued 1930)
Rockford-Janesville (constructed 1902, discontinued 1930)
Rockford-Freeport (constructed 1904, discontinued 1930)
Local service: Rockford
Competing bus service operated by Northland Greyhound Lines.
Interurban line:
Sterling-Dixon (completed 1904)
Abandoned 1925