Various route changes were made over the years, with many changes involving routes being combined, or being split into separate routes, or a portion of one route becoming a portion of another route. Such changes as are generally not documented here if they did not significantly affect garage assignments. The Surface Transit Routes - Past And Present section of this Web site includes more detailed information on these changes.
Not included are certain downtown shuttle routes, many of which would be divided among more than one garage, and operationally were usually extensions of various main line bus routes between downtown and different parts of Chicago.
52/152 Addison (5/11/28 new route, 1928 to Kostner)
34/134 Diversey (1928 from Wilcox, 1933 to Keeler)
52/152 Addison (1928 from Cicero/Cornelia, 1933 to Keeler)
34/134 Diversey (1933 from Kostner, 6/19/55 to route 76, 3/25/73 to North Ave.)
52/152 Addison (1933 from Kostner, 3/25/73 to North Park)
53/153 Wilson-Michigan (1925 from Rosemont, 6/19/55 to Limits)
56/156 Wilson-La Salle (9/17/46 new route, 6/19/55 to Limits)
51/151 Sheridan (3/25/17 new route, 9/7/57 to North Park)
53/153 Wilson-Michigan (5/1/17 new route, 1925 to Ravenswood)
54/154 Lunt (6/22/25 new route, 9/9/56 to route 96, 9/7/57 to North Park)
55/155 Howard-Ashland (6/2/25 new route, 10/18/53 to route 36A-to North Park)
26/126 Jackson (3/16/24 new route, 6/19/55 to Kedzie)
27/127 Jackson-Independence (3/16/24 new route, 6/19/55 to Kedzie)
28/128 Wacker-Wells (8/1/51 new route, 6/19/55 to Kedzie)
31/131 Washington (3/16/24 new route, 6/19/55 to Kedzie)
34/134 Diversey (6/18/24 new route, 1928 to Kostner)
36/136 Douglas (3/23/24 new route, 6/19/55 to Kedzie)
42/142 Shopping District (5/2/27 from Depot Motor Bus Lines, 6/19/55 to Kedzie)
48/148 Monroe Parking Lot (8/15/46 new route, 6/19/55 to Kedzie)
49/149 Michigan-State-Wacker (8/15/46 new route, 6/19/55 to Kedzie)
57/157 Ohio-Union Station (6/28/27 new route, 6/19/55 to Kedzie)
58/158 Wacker-North Western Station (5/12/47 new route, 6/19/55 to Kedzie)
1 Drexel-Hyde Park (4/15/23 new route, 4/24/83 to 77th St.)
2 Hyde Park (5/6/23 new route, 4/24/83 to 77th St.)
3 South Park (12/19/23 new route, 5/24/53 to 77th St.)
4/5 Jeffery (12/15/46 new route, 4/24/83 to 77th St.)
6 Garfield (7/2/23 new route, 9/5/54 to 69th St.)
10/110 Marquette (10/1/23 new route, 5/24/53 to 69th St.)
38 Indiana (5/24/53 replaces streetcar from Cottage Grove, 9/13/81 discontinued)
43 43rd-Root (9/5/54 from Archer, 4/24/83 to Archer)