These are locomotives of the Chicago, Milwaukee, St. Paul and Pacific Railroad, often referred to as the "Milwaukee Road". The Milwaukee was acquired by the Soo Line in 1985 and the Soo subsequently became part of the Canadian Pacific Railway.
Milwaukee Road steam locomotives were organized into classes by wheel arrangement. Additional suffixes, where used indicated:
Class A was the 4-4-2 type.
Image | Class | Quantity | Builder | Built | Retired | Cylinders (bore × stroke) | Driver diameter | Boiler pressure | Tractive effort | Notes | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
in | mm | in | m | psi | MPa | lbf | kN | |||||||
A1 | 18 | BLW | 1896–1903 | 1934–1948 | 13 × 26 22 × 26 | 330×660 559×660 | 78 | 1.981 | 200 | 1.38 | C:15,577 S:20,250 | C:69.29 S:90.08 | Vauclain compound, all rebuilt simple 1921–1922 as class A1-a. Eleven superheated 1925–1929 as class A1-as. | |
A1-as | 11 | Milwaukee Road | 1925–1929 (rebuilt) | 1934–1948 | 19 × 26 | 483×660 | 79 | 2.007 | 200 | 1.38 | 20,197 | 89.84 | Simple | |
A2 | 9 | BLW | 1901 | 1927–1929 | 15 × 28 25 × 28 | 381×711 635×711 | 84 | 2.134 | 200 | 1.38 | 20,420 | 90.83 | Vauclain compound | |
A2-a | 19 | BLW | 1902–1903 | 1927–1929 | 15 × 28 25 × 28 | 381×711 635×711 | 84 | 2.134 | 200 | 1.38 | 20,420 | 90.83 | Vauclain compound | |
A2-b | 5 | Milwaukee Road | 1907–1908 | 1927–1929 | 15 × 28 25 × 28 | 381×711 635×711 | 85 | 2.159 | 220 | 1.52 | 22,190 | 98.71 | Compound | |
A2-c | 12 | BLW | 1908–1909 | 1928–1930 | 15 × 28 25 × 28 | 381×711 635×711 | 85 | 2.159 | 220 | 1.52 | 22,190 | 98.71 | Vauclain compound | |
A2 | 2 | BLW 31274, 31275 | 1907 | 1951 | 15 × 28 25 × 28 | 381×711 635×711 | 85 | 2.159 | 220 | 1.52 | 22,200 | 98.75 | Balanced compound, rebuilt simple as class A4-s | |
A4-s | 2 | Milwaukee Road | (rebuilt) | 1951 | 22 × 28 | 559×711 | 79 | 2.007 | 200 | 1.38 | 29,160 | 129.71 | ||
A3-s | 1 | BLW 33778 | 1909 | 1951 | 22 × 28 | 559×711 | 73 | 1.854 | 25,240 | 112.27 | Acquired with Idaho and Washington Northern Railroad. Rebuilt as class A4-as | |||
A4-as | 1 | Milwaukee Road | (rebuilt) | 1951 | 22 × 28 | 559×711 | 79 | 2.007 | 200 | 1.38 | 29,162 | 129.72 | ||
A | 4 | Alco | 1935–1937 | 1949–1951 | 19 × 28 | 483×711 | 84 | 2.134 | 300 | 2.07 | 30,685 | 136.49 | Streamlined | |
Class B was for Vauclain compound 4-6-0s built by Baldwin Locomotive Works. Most were rebuilt as simple engines, those not rebuilt were scrapped in the late 1920s.
Image | Class | Quantity | Builder | Built | Retired | Cylinders (bore × stroke) | Driver diameter | Boiler pressure | Tractive effort | Notes | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
in | mm | in | m | psi | MPa | lbf | kN | |||||||
B | 1 | BLW | 1892 | 1914 | 12 × 26 20 × 26 | 305×660 508×660 | 62 | 1.575 | 190 | 1.31 | 15,600 | 69.39 | Rebuilt to class G5-xs | |
B1 | 14 | BLW | 1895–1897 | 1913–1915 | 121⁄2 × 26 21 × 26 | 318×660 533×660 | 62 | 1.575 | 200 | 1.38 | C:17,950 S:21,540 | C:79.85 S:95.81 | All rebuilt to class G5-s | |
B2 | 37 | BLW | 1897–1899 | 1914–1925 | 131⁄2× 26 23 × 26 | 343×660 584×660 | 62 | 1.575 | 200 | 1.38 | C:20,944 S:25,500 | C:93.16 S:113.43 | 19 rebuilt to class G6-fs, 18 rebuilt to class G6-m | |
B2 | 7 | BLW | 1900 | 1915–1924 | 131⁄2× 26 23 × 26 | 343×660 584×660 | 62 | 1.575 | 200 | 1.38 | 21,250 | 94.52 | 3 rebuilt to class G6-gs, 4 rebuilt to G6-n | |
B3-x | 1 | BLW | 1899 | 1927 | 14 × 30 24 × 30 | 256×762 610×762 | 68 | 1.727 | 200 | 1.38 | 24,200 | 107.65 | Scrapped | |
B3 | 25 | BLW | 1900 | 1915–1927 | 15 × 26 25 × 26 | 381×660 635×660 | 68 | 1.727 | 200 | 1.38 | C:23,079 S:28,080 | C:102.66 S:124.91 | 9 rebuilt to class G6-s, 4 rebuilt to class G6-os, 12 rebuilt to class G6-ps. | |
B4-x | 1 | BLW | 1899 | 1927 | 15 × 30 25 × 30 | 381×762 635×762 | 69 | 1.753 | 200 | 1.38 | 26,630 | 118.46 | Scrapped | |
B4 | 16 | BLW | 1900 | 1921–1927 | 15 × 30 25 × 30 | 381×762 635×762 | 69 | 1.753 | 200 | 1.38 | C:26,630 S:31,956 | C:118.46 S:142.15 | Narrow firebox. 10 rebuilt to class G7-as, 6 scrapped | |
B4 | 66 | BLW | 1901–1903 | 1915–1925 | 15 × 28 25 × 28 | 381×711 635×711 | 63 | 1.600 | 200 | 1.38 | C:27,222 S:32,666 | C:121.09 S:145.31 | Wide firebox. 20 rebuilt to class G7-bs, 4 rebuilt to class G7-cs, 25 rebuilt to class G8, 17 rebuilt to class G8-a, | |
Class C was the 2-8-0 type.
Image | Class | Quantity | Builder | Built | Retired | Cylinders (bore × stroke) | Driver diameter | Boiler pressure | Tractive effort | Notes | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
in | mm | in | m | psi | MPa | lbf | kN | |||||||
C1-a | 2 | BLW 19400–19401 | 1901 | 1934–1935 | 22 × 28 | 559×711 | 55 | 1.397 | 200 | 1.38 | 41,888 | 186.33 | ||
C1-b | 2 | BLW 19398–19399 | 1901 | 1934–1940 | 22 × 28 | 559×711 | 56 | 1.422 | 200 | 1.38 | 41,140 | 183.00 | Later class C1-c | |
C1-c | 65 | Milwaukee Road | 1904–1907 | 1934–1949 | 22 × 28 | 559×711 | 55 | 1.397 | 200 | 1.38 | 41,890 | 186.34 | ||
C1-d | 10 | Alco-Rogers | 1908–1909 | 1934–1936 | 22 × 28 | 559×711 | 57 | 1.448 | 190 | 1.31 | 38,391 | 170.77 | Acquired with Chicago, Terre Haute & Southeastern Railroad | |
C1-e | 5 | Alco-Brooks | 1905 | 1934–1936 | 191⁄2 × 28 | 495×711 | 57 | 1.448 | 200 | 1.38 | 31,754 | 141.25 | Acquired with Chicago, Milwaukee & Gary Railroad; né Detroit Southern Railroad | |
C1-f | 2 | BLW 32441–32442 | 1907 | 1934 | 21 × 28 | 533×711 | 55 | 1.397 | 200 | 1.38 | 38,166 | 169.77 | Acquired with Chicago, Milwaukee & Gary Railroad | |
C1-g | 2 | BLW 35425–35426 | 1910 | 1934 | 21 × 28 | 533×711 | 55 | 1.397 | 200 | 1.38 | 38,166 | 169.77 | Acquired with Chicago, Milwaukee & Gary Railroad | |
C2 | 75 | Milwaukee Road (25) BLW (50) | 1909–1910 | 1936–1965 | 23 × 30 | 584×762 | 63 | 1.600 | 200 | 1.38 | 42,820 | 190.47 | ||
C3 | 2 | BLW 32176, 32208 | 1907 | 1935 | 22 × 28 | 559×711 | 51 | 1.295 | 200 | 1.38 | 45,170 | 200.93 | Acquired with Idaho and Washington Northern Railroad | |
C3-a | 4 | BLW | 1910–1911 | 1934–1951 | 22 × 30 | 559×762 | 55 | 1.397 | 200 | 1.38 | 44,880 | 199.64 | Acquired with Idaho and Washington Northern Railroad | |
C3-b | 5 | Alco-Rogers | 1909 | 1945–1949 | 22 × 30 | 559×762 | 57 | 1.448 | 200 | 1.38 | 43,300 | 192.61 | ||
C4 | 1 | BLW 24742 | 1904 | 1927 | 20 × 24 | 508×610 | 49 | 1.245 | Acquired with Montana Railroad | |||||
C5 | 5 | Milwaukee Road | 1912 | 1951–1954 | 24 × 30 | 610×762 | 63 | 1.600 | 185 | 1.28 | 43,130 | 191.85 | ||
C5-a | 45 | Alco-Brooks (35) Milwaukee Road (10) | 1912–13 | 1945–1954 | 24 × 30 | 610×762 | 63 | 1.600 | 185 | 1.28 | 43,130 | 191.85 | ||
C7 | 5 | Alco-Schen | 1910 | 1950–1953 | 25 × 32 | 635×813 | 61 | 1.549 | 180 | 1.24 | 50,163 | 223.14 | Acquired with Chicago, Terre Haute & Southeastern Railroad | |
C7-a | 12 | Alco-Schen | 1912–1918 | 1950–1953 | 25 × 32 | 635×813 | 61 | 1.549 | 180 | 1.24 | 50,163 | 223.14 | Acquired with Chicago, Terre Haute & Southeastern Railroad | |
C9-a | 1 | Pittsburgh | 1901 | 1921 | 19 × 24 | 483×610 | 50 | 1.270 | Acquired with Tacoma Eastern Railroad | |||||
C9-b | 1 | BLW 5943 | 1881 | 1929 | 20 × 24 | 508×610 | 50 | 1.270 | 150 | 1.03 | 24,480 | 108.89 | Acquired with Bellingham Bay and British Columbia Railroad | |
C9-c | 1 | BLW 13800 | 1893 | 1929 | 19 × 24 | 483×610 | 50 | 1.270 | 150 | 1.03 | 26,511 | 117.93 | Acquired with Bellingham Bay and British Columbia Railroad | |
C9-d | 1 | BLW 24742 | 1904 | 1927 | 20 × 24 | 508×610 | 54 | 1.372 | Acquired with Bellingham Bay and British Columbia Railroad | |||||
C9-d | 1 | BLW 13800 | 1906 | 1935 | 22 × 28 | 559×711 | 50 | 1.270 | 200 | 1.38 | 46,076 | 204.96 | Acquired with Tacoma Eastern Railroad | |
Class D was the 0-8-0 type.
Image | Class | Quantity | Builder | Built | Retired | Cylinders (bore × stroke) | Driver diameter | Boiler pressure | Tractive effort | Notes | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
in | mm | in | m | psi | MPa | lbf | kN | |||||||
D1 | 2 | BLW 39758–39759 | 1913 | 1952 | 20 × 26 | 508×660 | 51 | 1.295 | 200 | 1.38 | 34,666 | 154.20 | Acquired with Chicago, Terre Haute & Southeastern Railroad | |
Class E was reserved for the electric locomotives.
Class F covered the 4-6-2 and 4-6-4 types.
Image | Class | Quantity | Builder | Built | Retired | Cylinders (bore × stroke) | Driver diameter | Boiler pressure | Tractive effort | Notes | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
in | mm | in | m | psi | MPa | lbf | kN | |||||||
F1 (1st) 4-6-2 | 1 | Schenectady 2855 | 1889 | 1926 | 19 × 24 | 483×610 | 68 | 1.727 | 180 | 1.24 | 19,490 | 86.70 | Rebuild to G4-g class 4-6-0 | |
F2 4-6-2 | 1 | Milwaukee Road | 1905 | 1929 | 23 × 26 | 584×660 | 72 | 1.829 | 200 | 1.38 | 34,470 | 153.33 | ||
F3 4-6-2 | 70 | Alco-Brooks 47442–47491, 48714–47433 | 1910 | 1929–1954 | 23 × 28 | 584×711 | 79 | 2.007 | 200 | 1.38 | 31,870 | 141.76 | All rebuilt to F3-s, F3-as or F3-bs. Two streamlined as F1 (second). One streamlined as F3 (second) | |
F4 4-6-2 | 70 | Milwaukee Road | 1910 | 1916–1954 | 23 × 28 | 584×711 | 69 | 1.753 | 200 | 1.38 | 36,490 | 162.32 | All rebuilt to F4-b (2), F4-ms (17) or F5-bs (6). | |
F5 4-6-2 | 65 (+6) | Milwaukee Road (15 new, 6 rebuilt from F4) Alco-Brooks (50) 51134–51163, 51328–51347 | 1911–1912 | 1934–1954 | 25 × 28 | 635×711 | 69 | 1.753 | 185 | 1.28 | 39,880 | 177.40 | All rebuilt to F5-b, F5-n or F3-an. | |
F6 4-6-4 | 14 | BLW 61135–61148 | 1930 | 1952–1954 | 26 × 28 | 660×711 | 80 | 2.032 | 225 | 1.55 | 45,250 | 201.28 | ||
F6-a 4-6-4 | 8 | BLW 61655–61662 | 1931 | 1952–1954 | 26 × 28 | 660×711 | 80 | 2.032 | 225 | 1.55 | 45,250 | 201.28 | ||
F7 4-6-4 | 6 | Alco 69064–69069 | 1938 | 1949–1951 | 231⁄2 × 30 | 597×762 | 84 | 2.134 | 300 | 2.07 | 50,194 | 223.27 | Streamlined | |
Class G was the simple 4-6-0 type, some of which were rebuilt from class B compounds.
Image | Class | Quantity | Builder | Built | Retired | Cylinders (bore × stroke) | Driver diameter | Boiler pressure | Tractive effort | Notes | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
in | mm | in | m | psi | MPa | lbf | kN | |||||||
G1 | 1 | Cooke | 1892 | 1902 | 17 × 24 | 432×610 | 56 | 1.422 | 130 | 0.90 | 20,600 | 91.63 | Acquired with Milwaukee and Superior Railroad | |
G2 | 4 | Brooks 1333–1335, 1514 | 1888–1889 | 1925–1927 | 18 × 24 | 457×610 | 56 | 1.422 | Acquired with Milwaukee and Northern Railroad | |||||
G2-a | 2 | Brooks 1707–1708 | 1890 | 1926 | 18 × 24 | 457×610 | 57 | 1.448 | Acquired with Milwaukee and Northern Superior Railroad | |||||
G2-b | 1 | PRR's Logansport, Indiana shops | 1888 | 1926 | 19 × 22 | 483×559 | 50 | 1.270 | Acquired with Tacoma Eastern Railroad | |||||
G2-c | 1 | BLW 23673 | 1904 | 1931 | 18 × 24 | 457×610 | 63 | 1.600 | 200 | 1.38 | 20,980 | 93.32 | Acquired with Tacoma Eastern Railroad | |
G3 | 7 | R.I. 2548, 2635–2640 | 1891–1892 | 1926–1927 | 18 × 24 | 457×610 | 57 | 1.448 | 160 | 1.10 | 18,550 | 82.51 | ||
G4 | 1 | Schen | 1925 | 18 × 26 | 457×660 | 57 | 1.448 | Acquired with Montana Railroad | ||||||
G4-a | 4 | Brooks 1219–1220, 1255–1256 | 1887 | 1926–1928 | 18 × 24 | 457×610 | 51 | 1.295 | 150 | 1.03 | 19,440 | 86.47 | Acquired with Milwaukee and Northern Railroad | |
G4-b | 2 | R.I. 3128–3129 | 1896 | 1927–1929 | 18 × 24 | 457×610 | 57 | 1.448 | 185 | 1.28 | 19,133 | 85.11 | Acquired with Des Moines Northern and Western Railroad | |
G4-c | 3 | R.I. 1047, 1052–1053 | 1881 | 1926 | 19 × 26 | 483×660 | 62 | 1.575 | ||||||
G4-d | 20 | R.I. 1411–1430 | 1883 | 1926–1933 | 19 × 26 | 483×660 | 63 | 1.600 | 150 | 1.03 | 18,995 | 84.49 | ||
G4-e | 101 | R.I. (40); Schen (35); Brooks (1); Grant (25); | 1885–1888 | 1926–1933 | 19 × 26 | 483×660 | 63 | 1.600 | 150 | 1.03 | 18,995 | 84.49 | ||
G4-f | 7 | BLW 15888–15891, 16017–16019 | 1898 | 18 × 24 | 457×610 | 51 | 1.295 | 180 | 1.24 | 20,872 | 92.84 | Acquired with Chicago, Terre Haute and Southeastern Railroad, né Southern Indiana | ||
G4-g | 1 | MILW's Milwaukee shops | 1926 (rebuilt) | 1930 | 19 × 24 | 483×610 | 68 | 1.727 | 180 | 1.24 | 19,494 | 86.71 | Rebuilt from F1 class 4-6-2 | |
G5 | 27 | R.I. | 1891 | 1925–1934 | 19 × 26 | 483×660 | 57 | 1.448 | 150 | 1.03 | 20,995 | 93.39 | Eight sold to Montana Railroad in 1907; re-acquired with Montana Railroad in 1910. | |
G5-a | 19 | Schen 3302–3311 (10); BLW (9) | 1890–1892 | 1926–1935 | 18 × 26 | 452×660 | 63 | 1.600 | 180 | 1.24 | 20,460 | 91.01 | ||
G5-b | 1 | R.I. 2151 | 1889 | 1926 | 19 × 24 | 483×610 | 64 | 1.626 | ||||||
G5-s | 15 | Milwaukee Road (re-builder) | 1913–1915 | 1938–1945 | 19 × 26 | 483×660 | 63 | 1.600 | 180 | 1.24 | 22,794 | 101.39 | Rebuilt from class B1 | |
G5-c | 1 | BLW 32348 | 1907 | 1927 | 19 × 26 | 483×660 | 56 | 1.422 | Acquired with Bellingham Bay and British Columbia Railroad | |||||
G5-d | 3 | Rogers 5386–5388 | 1899 | 1930–1934 | 18 × 26 | 457×660 | 51 | 1.295 | 190 | 1.31 | 26,676 | 118.66 | Acquired with Chicago, Terre Haute and Southeastern Railroad; né Southern Indiana Railroad | |
G5-e | 10 | BLW | 1903 | 1934 | 19 × 26 | 483×660 | 53 | 1.346 | 180 | 1.24 | 27,095 | 120.52 | Acquired with Chicago, Terre Haute and Southeastern Railroad; né Southern Indiana Railroad | |
G6-a | 28 | Milwaukee Road's Milwaukee Shops | 1905 | 1931–1936 | 201⁄2 × 26 | 521×660 | 73 | 1.854 | 200 | 1.38 | 25,445 | 113.18 | 17 superheated as class G6-as | |
G6-b | 5 | Milwaukee Road's Milwaukee Shops | 1907 | 1945–1948 | 201⁄2 × 26 | 521×660 | 73 | 1.854 | 200 | 1.38 | 25,445 | 113.18 | 4 superheated as class G6-bs | |
G6-c | 13 | Alco-Brooks 45789–45801 | 1909 | 1930–1948 | 201⁄2 × 26 | 521×660 | 73 | 1.854 | 200 | 1.38 | 25,445 | 113.18 | 11 superheated ad class G6-cs | |
G6-d | 2 | BLW 31269–31270 | 1907 | 1935 | 18 × 26 | 457×660 | 56 | 1.422 | 200 | 1.38 | 25,570 | 113.74 | Acquired with Idaho and Washington Northern Railroad | |
G6-e | 3 | BLW 31648, 32119, 32764 | 1907–1908 | 1935 | 19 × 26 | 483×660 | 63 | 1.600 | 200 | 1.38 | 25,327 | 112.66 | Acquired with Idaho and Washington Northern Railroad | |
G6-fs | 18 | Milwaukee Road (rebuilder) | 1914–1918 (rebuilt) | 1932–1954 | 20 × 26 | 508×660 | 63 | 1.600 | 180 | 1.24 | 25,260 | 112.36 | Rebuilt from class B2 | |
G6-gs | 3 | Milwaukee Road (rebuilder) | 1915 (rebuilt) | 1945–1953 | 20 × 26 | 508×660 | 63 | 1.600 | 180 | 1.24 | 25,257 | 112.35 | Rebuilt from class B2 | |
G6-h | 1 | Cooke 2252 | 1893 | 1930 | 21 × 26 | 533×660 | 63 | 1.600 | 180 | 1.24 | 31,326 | 139.34 | Acquired with Tacoma Eastern Railroad | |
G6-k | 3 | BLW 23682, 26638, 28486 | 1904–1906 | 1926–1932 | 20 × 26 | 508×660 | 57 | 1.448 | 190 | 1.31 | 29,327 | 130.45 | Acquired with Tacoma Eastern Railroad | |
G6-m | 18 | Milwaukee Road (rebuilder) | 1921–1928 (rebuilt) | 1950–1954 | 19 × 26 | 483×660 | 63 | 1.600 | 180 | 1.24 | 25,327 | 112.66 | Rebuilt from class B2; all superheated as class G6-ms | |
G6-n | 4 | Milwaukee Road (rebuilder) | 1921–24 (rebuilt) | 1941–1952 | 19 × 26 | 483×660 | 63 | 1.600 | 180 | 1.24 | 25,327 | 112.66 | Rebuilt from class B2; all superheated as class G6-ns | |
G6-os | 4 | Milwaukee Road (rebuilder) | 1921 (rebuilt) | 1949–1951 | 22 × 26 | 559×660 | 69 | 1.753 | 200 | 1.38 | 31,004 | 137.91 | Rebuilt from class B3 | |
G6-ps | 12 | Milwaukee Road (rebuilder) | 1921–1927 (rebuilt) | 1947–1954 | 22 × 26 | 559×660 | 69 | 1.753 | 200 | 1.38 | 31,004 | 137.91 | Rebuilt from class B3; Two streamlined as class G 1937–1948 | |
G6-s | 10 | Milwaukee Road (rebuilder) | 1915–1918 (rebuilt) | 1945–1951 | 221⁄2 × 26 | 572×660 | 69 | 1.753 | 180 | 1.24 | 29,190 | 129.84 | Rebuilt from class B3 | |
G6-r | 4 | Alco-Rogers 37567–37572 | 1905 | 1934 | 19 × 26 | 483×660 | 57 | 1.448 | 190 | 1.31 | 26,554 | 118.12 | Acquired with Chicago, Terre Haute and Southeastern Railroaad, né Chicago Southern Railroad | |
G7 | 81 | Milwaukee Road's Milwaukee Shops | 1904–1909 | 1928–1940 | 21 × 30 | 533×762 | 69 | 1.753 | 200 | 1.38 | 32,600 | 145.01 | Seven superheated as class G7-s | |
G7-as | 10 | Milwaukee Road (rebuilder) | 1921 (rebuilt) | 1940–1954 | 21 × 30 | 533×762 | 69 | 1.753 | 200 | 1.38 | 32,595 | 144.99 | Rebuilt from class B4 | |
G7-bs | 20 | Milwaukee Road (rebuilder) | 1915–1918 (rebuilt) | 1950–1954 | 22 × 28 | 559×711 | 63 | 1.600 | 180 | 1.24 | 32,912 | 146.40 | Rebuilt from class B4 | |
G7-cs | 4 | Milwaukee Road (rebuilder) | 1918–1920 (rebuilt) | 1948–1954 | 22 × 28 | 559×711 | 63 | 1.600 | 180 | 1.24 | 32,912 | 146.40 | Rebuilt from class B4 | |
G8 | 25 | Milwaukee Road (rebuilder) | 1919–1920 (rebuilt) | 1950–1957 | 22 × 28 | 559×711 | 63 | 1.600 | 200 | 1.38 | 36,568 | 162.66 | Rebuilt from class B4 | |
G8-a | 15 | Milwaukee Road (rebuilder) | 1921–1925 (rebuilt) | 1948–1956 | 22 × 28 | 559×711 | 63 | 1.600 | 200 | 1.38 | 36,568 | 162.66 | Rebuilt from class B4 | |
Class H covered the 4-4-0 "American" type.
Image | Class | Quantity | Builder | Built | Retired | Cylinders (bore × stroke) | Driver diameter | Boiler pressure | Tractive effort | Notes | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
in | mm | in | m | psi | MPa | lbf | kN | |||||||
H6 | 2 | Brooks 1599–1600 | 1890 | 1926–1927 | 17 × 24 | 432×610 | 62 | 1.575 | Acquired 1893 with Milwaukee and Northern | |||||
H6-b | 3 | Schen. 3556–3557 R. I. 2797 | 1891–1892 | 1926–1930 | 17 × 24 | 432×610 | 62 | 1.575 | Acquired 1899 with Des Moines and North Western | |||||
H6-c | 4 | Brooks 1432–1433, 1512–1513 | 1888–1889 | 1926 | 17 × 24 | 432×610 | 62 | 1.575 | Acquired 1893 with Milwaukee and Northern | |||||
H6-d | 31 | R. I. 1687–1696 Brooks 1148 Cooke 1754–1763 Grant (10) | 1886–1887 | 1926–1947 | 18 × 24 | 457×610 | 68 | 1.727 | 150 | 1.03 | 14,500 | 64.50 | ||
H7 | 18 | R. I. 1272–1293, 1304–1306 | 1882–1883 | 1925–1932 | 18 × 24 | 457×610 | 63 | 1.600 | 150 | 1.03 | 15,705 | 69.86 | ||
H7-a | 3 | R. I. 1676–1678 | 1886 | 1928–1930 | 18 × 24 | 457×610 | 63 | 1.600 | 150 | 1.03 | 15,740 | 70.02 | Acquired with Chicago, Evanston and Lake Shore Railroad | |
H7-b | 10 | Schen. 2962–2971 | 1889–1900 | 1927–1933 | 17 × 24 | 432×610 | 63 | 1.600 | 180 | 1.24 | 16,840 | 74.91 | ||
H7-c | 1 | BLW 18555 | 1901 | 1928 | 17 × 24 | 432×610 | 68 | 1.727 | Acquired from Davenport, Rock Island and Northwestern Railroad | |||||
H7-d | 1 | BLW 18699 | 1901 | 1928 | 17 × 24 | 432×610 | 68 | 1.727 | Acquired from Davenport, Rock Island and Northwestern Railroad | |||||
H8 | 9 | Rogers 6228–6232 Alco (4) | 1904–1905 | 1934–1951 | 18 × 26 | 457×660 | 69 | 1.753 | 180 | 1.24 | 19,236 | 85.57 | Acquired with Chicago, Terre Haute and Southeastern Railroad | |
Class I covered the 0-6-0 switcher types.
Image | Class | Quantity | Builder | Built | Retired | Cylinders (bore × stroke) | Driver diameter | Boiler pressure | Tractive effort | Notes | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
in | mm | in | m | psi | MPa | lbf | kN | |||||||
I1 | 3 | BLW 2391, 4330, 4340 | 1871, 1878 | 1917 | 16 × 24 | 406×310 | 50 | 1.270 | ||||||
I2 | 2 | Brooks 1340, 1673 | 1888, 1890 | 1918 | 17 × 24 | 432×310 | 50 | 1.270 | Acquired with Milwaukee and Northern | |||||
I3 | 9 | Rhode Island 2621, 2622, 2624, 2702–2707 | 1891 | 1926–1945 | 18 × 24 | 457×310 | 50 | 1.270 | 160 | 1.10 | 20,736 | 92.24 | Two rebuilt to 0-6-0ST as class I3-ax | |
I4 | 3 | Milwaukee Shops | 1891–1895 | 1926–1928 | 18 × 24 | 457×310 | 51 | 1.295 | 180 | 1.24 | 23,330 | 103.78 | ||
I4-a | 43 | Milwaukee Shops (38) BLW 16206–16210 (5) | 1898–1902 | 1909–1944 | 18 × 24 | 457×310 | 51 | 1.295 | 180 | 1.24 | 23,330 | 103.78 | One rebuilt to 0-6-0ST as class I-4ax | |
I5 | 6 | Milwaukee Shops | 1902–1903 | 1931–1934 | 19 × 26 | 483×660 | 51 | 1.295 | 180 | 1.24 | 28,160 | 125.26 | ||
I5-a | 166 | Milwaukee Shops | 1903–1913 | 1933–1955 | 19 × 26 | 483×660 | 51 | 1.295 | 180 | 1.24 | 28,158 | 125.25 | Two rebuilt to 0-6-0ST as class I-5ax | |
I5-b | 2 | BLW 32423, 34354 | 1907, 1910 | 1934 | 19 × 26 | 483×660 | 51 | 1.295 | 180 | 1.24 | 28,158 | 125.25 | Acquired with Chicago, Milwaukee and Gary | |
I6-s | 10 | Milwaukee Shops | 1913–1914 | 1948–1956 | 20 × 26 | 508×660 | 51 | 1.295 | 180 | 1.24 | 31,200 | 138.78 |
Class J covered 0-4-0 switchers.
Image | Class | Quantity | Builder | Built | Retired | Cylinders (bore × stroke) | Driver diameter | Boiler pressure | Tractive effort | Notes | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
in | mm | in | m | psi | MPa | lbf | kN | |||||||
J1 | 2 | BLW 3488–3489 | 1873 | 1905 | 14 × 22 | 356×559 | 49 | 1.245 | ||||||
J2 | 3 | Brooks | 1883–1887 | 1911–1917 | 16 × 22 | 406×559 | 48 | 1.219 | Acquired with Milwaukee and Northern | |||||
J2-a | 80 | various | 1878–1882 | 1906–1930 | 16 × 22 | 406×559 | 50 | 1.270 | 130 | 0.90 | 12,200 | 54.27 | ||
J3 | 5 | Grant | 1893 | 1918–1926 | 16 × 22 | 406×559 | 51 | 1.295 | 160 | 1.10 | 15,020 | 66.81 |
Class K comprised 2-6-2 "Prairie" locomotives.
Image | Class | Quantity | Builder | Built | Retired | Cylinders (bore × stroke) | Driver diameter | Boiler pressure | Tractive effort | Notes | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
in | mm | in | m | psi | MPa | lbf | kN | |||||||
K1 | 195 | Alco (125) Milwaukee Road (70) | 1907–1909 | 1935–1945 | 21 × 28 | 533×711 | 63 | 1.600 | 200 | 1.38 | 33,320 | 148.21 | 71 rebuilt to K1-as | |
K1-as | 71 | Alco (41) Milwaukee Road (30) | 1935–1955 | 211⁄2 × 28 | 546×711 | 63 | 1.600 | 185 | 1.28 | 32,310 | 143.72 | rebuilt from K1 | ||
K1-a | 1 | BLW 34918 | 1910 | 1927 | 17 × 24 | 432×610 | 44 | 1.118 | Acquired with Puget Sound and Willapa Harbor Railroad. Sold to Cascade Timber Company |
Class L was for 2-8-2 "Mikado" locomotives.
Image | Class | Quantity | Builder | Built | Retired | Cylinders (bore × stroke) | Driver diameter | Boiler pressure | Tractive effort | Notes | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
in | mm | in | m | psi | MPa | lbf | kN | |||||||
L1 | 20 | Milwaukee Road | 1909 | 1945–1954 | 24 × 30 | 610×762 | 63 | 1.600 | 200 | 1.38 | 46,630 | 207.42 | 2 locomotives superheated as L1-s | |
L1-s | 2 | Milwaukee Road | 1940 | 26 × 30 | 660×762 | 63 | 1.600 | 185 | 1.28 | 50,620 | 225.17 | |||
L2 | 180 | Milwaukee Road (40) Alco (140) | 1912–1914 | 1935–1955 | 26 × 30 | 660×762 | 63 | 1.600 | 200 | 1.38 | 54,723 | 243.42 | 69 fitted with stokers as class L2-r | |
L2a | 100 | BLW | 1920 | 1949–1954 | 26 × 30 | 660×762 | 63 | 1.600 | 200 | 1.38 | 54,723 | 243.42 | ||
L2b | 100 | BLW | 1922–1923 | 1950–1956 | 26 × 30 | 660×762 | 63 | 1.600 | 200 | 1.38 | 54,723 | 243.42 | ||
L3 | 100 | Alco 59740–59789, 61042–61046, 61148–61192 | 1918–1919 | 1938–1956 | 27 × 32 | 686×813 | 63 | 1.600 | 200 | 1.38 | 62,949 | 280.01 | USRA Heavy Mikado. 18 fitted with booster as class L3-a. One fitted with tender booster as class L3-b |
Class M was for the 2-6-0 type.
Image | Class | Quantity | Builder | Built | Retired | Cylinders (bore × stroke) | Driver diameter | Boiler pressure | Tractive effort | Notes | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
in | mm | in | m | psi | MPa | lbf | kN | |||||||
M1 | 2 | BLW | 1905 | 1925, 1927 | 18 × 24 | 457×610 | 63 | 1.600 | 190 | 1.31 | 19,930 | 88.65 | Acquired with Montana Railroad | |
M1a | 1 | BLW | 1891 | 1928 | 17 × 24 | 432×610 | 54 | 1.372 | Acquired with Bellingham Bay and British Columbia Railroad | |||||
M1b | 3 | BLW | 1892 | 1930 | 20 × 24 | 508×610 | 51 | 1.295 | 140 | 0.97 | 22,400 | 99.64 | Acquired with Chicago, Terre Haute and Southeastern Railroad | |
M1c | 2 | BLW | 1901 | 1930 | 20 × 24 | 508×610 | 51 | 1.295 | 160 | 1.10 | 25,600 | 113.87 | Acquired with Chicago, Terre Haute and Southeastern Railroad, originally Southern Indiana Railroad | |
M1d | 11 | Rogers | 1904, 1905 | 1910–1934 | 20 × 24 | 508×610 | 51 | 1.295 | 160 | 1.10 | 25,600 | 113.87 | Acquired with Chicago, Terre Haute and Southeastern Railroad, originally Southern Indiana Railroad. | |
M1e | 4 | Alco | 1904, 1905 | 1934 | 19 × 26 | 483×660 | 57 | 1.448 | 200 | 1.38 | 27,996 | 124.53 | Acquired with Chicago, Milwaukee and Gary Railroad, originally, Illinois, Iowa and Minnesota Railroad. | |
M2 | 4 | Alco | 1905, 1906 | 1927–1934 | 20 × 28 | 508×711 | 63 | 1.600 | 200 | 1.38 | 30,222 | 134.43 | ex Chicago Junction. |
Class N consisted of articulated locomotives of 2-6-6-2 arrangement.
Image | Class | Quantity | Builder | Built | Retired | Cylinders (bore × stroke) | Driver diameter | Boiler pressure | Tractive effort | Notes | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
in | mm | in | m | psi | MPa | lbf | kN | |||||||
N1 | 25 | Alco-S 48838–48862 | 1910–1911 | 1928–1935 | 231⁄2 × 30 37 × 30 | 597×762 940×762 | 57 | 1.448 | 200 | 1.38 | 70,396 | 313.14 | Compound Mallet. 17 rebuilt to class N3 | |
N2 | 16 | Alco-S 51057–51066, 52124–52129 | 1912 | 1934–1949 | 231⁄2 × 30 37 × 30 | 597×762 940×762 | 57 | 1.448 | 200 | 1.38 | 70,396 | 313.14 | Compound Mallet | |
N3 | 17 | Milwaukee Road (re-built) | 1929–1931 | 1950–1954 | 211⁄2 × 30 | 546×762 | 57 | 1.448 | 200 | 1.38 | 87,720 | 390.20 | Four cylinder simple articulated. Rebuilt from class N1 | |
Class S were 4-8-4 "Northern" locomotives.
Image | Class | Quantity | Builder | Built | Retired | Cylinders (bore × stroke) | Driver diameter | Boiler pressure | Tractive effort | Notes | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
in | mm | in | m | psi | MPa | lbf | kN | |||||||
S1 | 2 | BLW 61176 (1), Milwaukee Shops (1) | 1930 (1), 1938 (1) | 1954 | 28 × 30 | 711×762 | 74 | 1.88 | 230 | 1.59 | 62,136 | 276.39 | ||
S2 | 40 | BLW 62089–62118, 62344–62353 | 1937–1940 | 1954–1956 | 26 × 32 | 660×813 | 74 | 1.88 | 285 | 1.97 | 70,816 | 315.01 | ||
S3 | 10 | Alco 71973–71982 | 1944 | 1954–1956 | 26 × 32 | 660×813 | 74 | 1.88 | 250 | 1.72 | 62,116 | 276.31 | Two preserved: (261) in Minneapolis, 265 at IRM |
Class X covered Lima Shay's.
Image | Class | Quantity | Builder | Built | Retired | Cylinders (bore × stroke) | Driver diameter | Boiler pressure | Tractive effort | Notes | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
in | mm | in | m | psi | MPa | lbf | kN | |||||||
Milwaukee Road class X1 | 1 | Lima 2057 | 1908 | after 1947 | 11 × 12 | 32 | 0.813 | 200 | 22,563 lbs | Class B, 50 Ton Shay. CM&StP 1499, renumbered as CM&StP 25 in 1912 | ||||
Milwaukee Road class X2 | 1 | Lima 1912 | 6/1907 | sold 1919 | 12 × 15 | 36 | 0.914 | 200 | 30,375 lbs | Class C, 3 truck shay. Acquired with the Idaho & Washington Northern Railroad as their #6. Renumbered as CM&StP 26 in 1916. | ||||
Image | Model | Milwaukee class | Quantity | Built | Retired | Notes |
---|---|---|---|---|---|---|
6.6-BS | 1 | 1940 | 1961 | |||
10-BS | 12 | 1940–45 | 1965–72 | |||
10-BS | 10 | 1948–49 | 1967-76 | |||
12-BS | 21 | 1950–54 | 1968–76 | |||
12-BRS | 2 | 1951–52 | 1974–76 | |||
16-BRS-6 | 8 | 1951–53 | 1967-76 | Two were built as AS-616B models (rebuilt as AS-616 in 1953) |
Image | Model | Milwaukee class | Quantity | Built | Retired | Notes |
---|---|---|---|---|---|---|
Davenport 44-ton | 3.8-DS; | 2 | 1942 | 1958 | 380 hp |
Image | Model | Milwaukee class | Quantity | Built | Retired | Notes |
---|---|---|---|---|---|---|
6-ES | 25 | 1939–41 | 1975–1983 | |||
10-ES | 8 | 1939–1947 | 1981–1984 | |||
2 units (1 A–B cow–calf set) | 1949 | 1978–1979 | ||||
10-ES | 1 | 1950 | 1984 | |||
12 units (6 A–B cow–calf sets) | 1950–1951 | 1980–1984 | ||||
9-ES | 3 | 1951 | 1982–1984 | |||
12-ES | 48 | 1954 | 1980–(end) | |||
15-ES | 64 | 1975–76 | (end) | all to Soo Line Railroad |
Image | Model | Milwaukee class | Quantity | Built | Retired | Notes |
---|---|---|---|---|---|---|
20-EP | 2 A units | 1941 | 1961 | |||
20-EP | 10 A units | 1946 | 1969 | |||
24-EP | 18 units (6 ABA sets) | 1956 | 1973 | Built to UP specification with steam generators for inter-city service. | ||
24-EP | 6 A units | 1961 | 1982 | Built equipped with head end power for suburban service. | ||
13.5-EF | 52 units (26 A-B semi-permanently coupled pairs, making up 13 ABBA sets) | 1941–45 | 1959 | |||
15-EF | 16 units (4 ABBA sets) | 1949 | 1965 | |||
15-EF | 1949–1953 | 1974–1984 | ||||
15-EP | 32 (16 FP7-F7B-FP7 sets) | 1950–1952 | 1976–1984 | Five sets reassigned to freight service | ||
17.5-EF | 12 units (6 AB sets) | 1954 | 1977–1982 | Four A units re-equipped for suburban service |
Image | Model | Milwaukee class | Quantity | Built | Retired | Notes |
---|---|---|---|---|---|---|
36-EP-6 | 5 | 1968 | 1982–1984 | Built for intercity passenger train service. All five later re-equipped for freight train service after formation of Amtrak. | ||
15 | 1974 | Built for suburban commuter passenger service. All later turned over to RTA when RTA assumed responsibility for suburban commuter passenger service. Two units remain in service with Metra in 2014. Model was unique to Milwaukee Road. |
Image | Model | Milwaukee class | Quantity | Built | Retired | Notes |
---|---|---|---|---|---|---|
3.6-GS | 3 | 1940–1941 | 1958–1967 | |||
23-GRS | 5 | 1973 | 1984–1985 | |||
25-GRS | 12 | 1965 | 1966 (1), 1984 (11) | One unit wrecked at Whitman, Minnesota in 1966 | ||
28-GRS | 12 | 1966 | 1984 | |||
30-GRS | 10 | 1966–68 | 1980 (1), 1984 (9) | |||
30-GRS-6 | 8 | 1974 | 1985 | |||
33-GRS-6 | 4 | 1968 | 1980 (1), 1982 (3) | |||
36-GRS-6 | 4 | 1972 | 1984–1985 |
Image | Model | Milwaukee class | Quantity | Built | Retired | Notes |
---|---|---|---|---|---|---|
Whitcomb 44-ton (B-B) | 3.8-WS | 7 | 1940–1941 | 1941 (1), 1954–68 | 380 hp, 1 sold to Purdue University in 1941 | |
6.5-WS | 2 | 1929-30 | 1944 | built as 300 hp gas-electric, rebuilt to 650 hp diesel-electric in 1941; sold to US Government 1944 |
The Milwaukee Road was one of the most electrified railroads in the United States. The system used was 3,000 volt DC overhead line.
Image | Model | Milwaukee class | Rebuilder | Total rebuilt | Rebuild date | Retired | Notes | Refs. |
---|---|---|---|---|---|---|---|---|
17.5-ERS-6 | Milwaukee Road's Milwaukee shops | 50 | June 1969 – October 1973 | [1] | ||||
18-ERS-6 | Milwaukee Road's West Milwaukee shops | 21 | March 1974 – January 1976 | [2] |
Only six Milwaukee Road steam locomotives survive:
Image | MILW No. | Class | Type | Manufacturer | Serial No. | Date | Notes | Refs. |
---|---|---|---|---|---|---|---|---|
111 | — | 4-4-0 | Breese, Kneeland, and Company | 73 | May 1857 | Ex-Milwaukee & Mississippi No. 40 Spring Green; sold in 1889, became El Paso & Southwestern Railroad No. 1 | [3] | |
261 | S3 | 4-8-4 | American Locomotive Company | 71974 | July 1944 | [4] | ||
265 | S3 | 4-8-4 | American Locomotive Company | 71978 | July 1944 | [4] | ||
1057 | J2-a | 0-4-0 | Milwaukee Shops | — | 1885 | Originally No. 37, renumbered 58 in 1898, then 1057 in 1899. | [4] | |
1004 | G8 | 4-6-0 | Milwaukee Road (r/b) | 19543 | September 1920 | Rebuilt from class B4 no. 4335 (Baldwin 19543 of 1901) and numbered 2404; renumbered 1004 in 1938 | [5] | |
1416 | I5-a | 0-6-0 | Milwaukee Shops | — | April 1908 | Originally 1207, renumbered 1416 in 1938; at EMTRAC in Evansville, Indiana. | [6] |
In addition, the tender from a class S2 locomotive also survives in Ingomar, Montana.
Image | MILW No. | Model | Class | Manufacturer | Rebuilder | Serial No. | Build date | Rebuild date | Current status | Notes | Refs. |
---|---|---|---|---|---|---|---|---|---|---|---|
532 | 18-ERS-6 | General Motors Electro-Motive Division (EMD) | Milwaukee Road's West Milwaukee shops | 18780 | February 1954 | October 1975 | Operational; Whitewater Valley Scenic Railroad at Connersville, Indiana | [2] | |||
988 | 15-ARS | American Locomotive Company | Not rebuilt | 75135 | January 1947 | Not rebuilt | On static display; Mid-Continent Railway Museum at North Freedom, Wisconsin | [7] |
The American Locomotive Company was an American manufacturer that operated from 1901 to 1969, initially specializing in the production of locomotives but later diversifying and fabricating at various times diesel generators, automobiles, steel, tanks, munitions, oil-production equipment, as well as heat exchangers for nuclear power plants.
The New York Central Railroad (NYC) called the 4-8-2 type of steam locomotive the Mohawk type. It was known as the Mountain type on other roads, but the New York Central did not see the name as fitting on its famous Water Level Route. Instead, it picked the name of one of those rivers its rails followed, the Mohawk River, to name its newest type of locomotive.
The New York Central Hudson was a popular 4-6-4 "Hudson" type steam locomotive built by the American Locomotive Company (ALCO), Baldwin Locomotive Works and the Lima Locomotive Works in three series from 1927 to 1938 for the New York Central Railroad. Named after the Hudson River, the 4-6-4 wheel arrangement came to be known as the "Hudson" type in the United States, as these locomotives were the first examples built and used in North America. Built for high-speed passenger train work, the Hudson locomotives were famously known for hauling the New York Central's crack passenger trains, such as the 20th Century Limited and the Empire State Express.
The AAR wheel arrangement system is a method of classifying locomotive wheel arrangements that was developed by the Association of American Railroads. Essentially a simplification of the European UIC classification, it is widely used in North America to describe diesel and electric locomotives. It is not used for steam locomotives, which use the Whyte notation instead.
The Little Joe is a type of railroad electric locomotive built by General Electric. The locomotives had twelve axles, eight of them powered, in a 2-D+D-2 arrangement. They were originally intended to be exported to the Soviet Union and designed to operate on Soviet Railways (SZhD) 3,300-volt DC overhead line system. They were never exported to the Soviet Union due to rising political tensions. Only 20 were built, with 15 sold to domestic operators and five exported to Brazil.
The Consolidation Line was a series of diesel-electric railway locomotive designs produced by Fairbanks-Morse and its Canadian licensee, the Canadian Locomotive Company. Railfans have dubbed these locomotives C-liners, however F-M referred to the models collectively as the C-Line. A combined total of 165 units were produced by F-M and the CLC between 1950 and 1955.
Under the Whyte notation for the classification of steam locomotives by wheel arrangement, a 2-6-6-2 is a locomotive with one pair of unpowered leading wheels, followed by two sets of three pairs of powered driving wheels and one pair of trailing wheels. The wheel arrangement was principally used on Mallet-type articulated locomotives, although some tank locomotive examples were also built. A Garratt locomotive or Golwé locomotive with the same wheel arrangement is designated 2-6-0+0-6-2 since both engine units are pivoting.
A boxcab, in railroad terminology, is a term for an electric locomotive in which the machinery and crew areas were enclosed in a box-like superstructure. Deriving from "boxcar", the term mainly occurs in North America. The term has rarely been applied to diesel locomotives. It was also applied in Australia to Victorian Railways' "E" class second series electric locomotives.
The Erie-built was the first streamlined, cab-equipped dual service diesel locomotive built by Fairbanks-Morse, introduced as direct competition to such models as the ALCO PA and FA and EMD FT. F-M lacked the space and staff to design and manufacture large road locomotives in their own plant at Beloit, Wisconsin, and was concerned that waiting to develop the necessary infrastructure would cause them to miss out on the market opportunity for large road locomotives. Engineering and assembly work was subcontracted out to General Electric, which produced the locomotives at its Erie, Pennsylvania, facility, thereby giving rise to the name "Erie-built."
The Chicago, Milwaukee, St. Paul and Pacific Railroad classes EP-1 and EF-1 comprised 42 boxcab electric locomotives built by the American Locomotive Company (Alco) in 1915. Electrical components were from General Electric. The locomotives were composed of two half-units semi-permanently coupled back-to-back, and numbered as one unit with 'A' and 'B' suffixes. As built, 30 locomotives were assigned to freight service, classified as EF-1 and numbered 10200–10229. The remaining twelve locomotives were assigned to passenger service as class EP-1, numbered 10100–10111, with higher-speed passenger gearing. The design was highly successful, replacing a much larger number of steam locomotives, cutting costs and improving schedules. General Electric self-proclaimed this electric locomotive to be the “King of the Rails” in a silent promotional film from 1915.
The Milwaukee Road's class EP-3 comprised ten electric locomotives built in 1919 by Baldwin and Westinghouse. They were nicknamed Quills because of their use of a quill drive. Although they were good haulers and well liked by engineers, poor design and constant mechanical problems plagued them for their entire lives and they were among the first of the Milwaukee Road's electric locomotives to be retired.
The Milwaukee Road Class "A" was a class of high-speed, streamlined 4-4-2 "Atlantic" type steam locomotives built by the American Locomotive Company (ALCO) from 1935 to 1937 to haul the Milwaukee Road's Hiawatha express passenger trains. Numbered from No. 1 to No. 4, they were among the last Atlantic type locomotives built in the United States, and certainly the largest and most powerful. The class were the first locomotives in the world built for daily operation at over 100 mph (160 km/h), and the first class built completely streamlined, bearing their casings their entire lives. Although partially supplanted by the larger class "F7" Hudsons from 1937, they remained in top-flight service until the end. Locomotive No. 3 was taken out of service in 1949 and cannibalized for spare parts to keep the other three running until 1951.
The Milwaukee Road's class "F7" comprised six (#100–#105) high-speed, streamlined 4-6-4 "Baltic" (Hudson) type steam locomotives built by the American Locomotive Company (ALCO) in 1937–38 to haul the Milwaukee's Hiawatha express passenger trains. Following on from the success of the road's class "A" 4-4-2s, the F7s allowed the road to haul heavier trains on the popular Chicago–Twin Cities routes.
The ALCO boxcabs were diesel-electric switcher locomotives, otherwise known as AGEIR boxcabs as a contraction of the names of the builders. Produced by a partnership of three companies, ALCO built the chassis and running gear, General Electric the generator, motors and controls, and Ingersoll Rand the diesel engine. The principle of operation was the same as modern locomotives, the diesel engine driving a main generator of 600 volts DC with four traction motors, one per axle.
The Milwaukee Road class L2 were 2-8-2 or "Mikado"-type steam locomotives built by or for the Chicago, Milwaukee, St. Paul and Pacific Railroad in the period 1912–1923.
The GE boxcabs, sometimes also GE IR boxcabs, were diesel-electric switcher locomotives succeeding the ALCO boxcabs. The locomotives were built by General Electric and Ingersoll Rand without ALCO. Production lasted from 1928 to 1930. These boxcabs were often termed oil-electrics to avoid the use of the German name Diesel, unpopular after World War I.
The GE three-power boxcabs were early electro-diesel hybrid switcher locomotives. These boxcabs were termed oil battery electrics to avoid the use of the German name Diesel, unpopular after World War I.
R-Motor was the class designation given by the New York Central one prototype and a later fleet of 42 ALCO-GE built electric freight locomotives for use in the New York Electrified Zone. In conjunction with the P Motors, the Rs marked the second generation of electric locomotives built for the New York Central. Also like the P Motors they used advanced nose suspended traction motors and the R-2s were some of the first North American locomotives to make use of the C-C wheel arrangement, which later became the standard for diesel electric road freight.
The Great Northern Z-1 was a class of ten electric locomotives built for the Great Northern Railway They were used to work the route through the second Cascade Tunnel. They were built between 1926–1928 by Baldwin Locomotive Works, with Westinghouse electrics, and stayed in service until dieselisation in 1956. Each was of 1,830 horsepower (1,360 kW) with a 1-D-1 wheel arrangement, although they were always used in coupled pairs.
The Milwaukee Road S3 Class was a class of 10 4-8-4 "Northern" type steam locomotives built by the American Locomotive Company in 1944 and operated by the Milwaukee Road until the mid 1950s. The locomotives saw service in pulling freight and passenger trains throughout the Milwaukee Road.