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 The Canadian Pacific Railway (french: Chemin de fer Canadien Pacifique) , also known simply as CPR or Canadian Pacific and formerly as CP Rail (1968–1996), is a Canadian Class I railway incorporated in 1881. The railway is owned by Canad ...

Steam

Milwaukee Road

steam locomotive A steam locomotive is a locomotive that provides the force to move itself and other vehicles by means of the expansion of steam. It is fuelled by burning combustible material (usually coal, oil or, rarely, wood) to heat water in the loco ...

s were organized into classes by

wheel arrangement In rail transport, a wheel arrangement or wheel configuration is a system of classifying the way in which wheels are distributed under a locomotive. Several notations exist to describe the wheel assemblies of a locomotive by type, position, and c ...

. Additional suffixes, where used indicated: * s: fitted with a

superheater A superheater is a device used to convert saturated steam or wet steam into superheated steam or dry steam. Superheated steam is used in steam turbines for electricity generation, steam engines, and in processes such as steam reforming. There ...

(where the class was not fitted from new) * r: fitted with a

mechanical stoker A mechanical stoker is a mechanical system that feeds solid fuel like coal, coke or anthracite into the furnace of a steam boiler. They are common on steam locomotives after 1900 and are also used on ships and power stations. Known now as a spre ...

(where the class was not fitted from new)

Class A: 4-4-2

Class A was the 4-4-2 type.

Class B: 4-6-0

Class B was for

Vauclain compound The Vauclain compound was a type of compound steam locomotive that was briefly popular circa 1900. Developed at the Baldwin Locomotive Works, it featured two pistons moving in parallel, driving a common crosshead and controlled by a common valve ...

4-6-0 A 4-6-0 steam locomotive, under the Whyte notation for the classification of steam locomotives by wheel arrangement, has four leading wheels on two axles in a leading bogie and six powered and coupled driving wheels on three axles with the ...

s built by

Baldwin Locomotive Works The Baldwin Locomotive Works (BLW) was an American manufacturer of railroad locomotives from 1825 to 1951. Originally located in Philadelphia, it moved to nearby Eddystone, Pennsylvania, in the early 20th century. The company was for decades ...

. Most were rebuilt as ''simple'' engines, those not rebuilt were scrapped in the late 1920s.

Class C: 2-8-0

Class C was the

2-8-0 Under the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of two leading wheels on one axle, usually in a leading truck, eight powered and coupled driving wheels on four axles, and no trailing wh ...

type.

Class D: 0-8-0

Class D was the

0-8-0 Under the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of no leading wheels, eight powered and coupled driving wheels on four axles and no trailing wheels. Locomotives of this type are also referr ...

type.

Class E

Class E was reserved for the

electric locomotives An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or on-board energy storage such as a battery or a supercapacitor. Locomotives with on-board fuelled prime movers, such as diesel engines or gas ...

Class F: 4-6-2 and 4-6-4

Class F covered the

4-6-2 Under the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of four leading wheels on two axles, six powered and coupled driving wheels on three axles and two trailing wheels on one axle. The locomo ...

and

4-6-4 Under the Whyte notation for the classification of locomotives, represents the wheel arrangement of four leading wheels, six powered and coupled driving wheels and four trailing wheels. In France where the type was first used, it is known ...

types.

Class G: 4-6-0

Class G was the ''simple''

type, some of which were rebuilt from class B compounds.

Class H: 4-4-0

Class H covered the

4-4-0 4-4-0 is a locomotive type with a classification that uses the Whyte notation for the classification of steam locomotives by wheel arrangement and represents the arrangement: four leading wheels on two axles (usually in a leading bogie), four ...

"American" type. * Milwaukee Road class H1 * Milwaukee Road class H2 * Milwaukee Road class H3 * Milwaukee Road class H4 * Milwaukee Road class H5

Class I: 0-6-0

Class I covered the

0-6-0 Under the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of no leading wheels, six powered and coupled driving wheels on three axles and no trailing wheels. This was the most common wheel arrang ...

switcher A switcher, shunter, yard pilot, switch engine, yard goat, or shifter is a small railroad locomotive used for manoeuvring railroad cars inside a rail yard in a process known as ''switching'' (US) or ''shunting'' (UK). Switchers are not inten ...

types.

Class J: 0-4-0

Class J covered

0-4-0 Under the Whyte notation for the classification of steam locomotives, represents one of the simplest possible types, that with two axles and four coupled wheels, all of which are driven. The wheels on the earliest four-coupled locomotives were ...

switchers.

Class K: 2-6-2

Class K comprised

2-6-2 Under the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of two leading wheels, six coupled driving wheels and two trailing wheels. This arrangement is commonly called a Prairie. Overview The ...

"Prairie" locomotives.

Class L: 2-8-2

Class L was for

2-8-2 Under the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of two leading wheels on one axle, usually in a leading truck, eight powered and coupled driving wheels on four axles and two trailing w ...

"Mikado" locomotives.

Class M: 2-6-0

Class M was for the

2-6-0 Under the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of two leading wheels on one axle, usually in a leading truck, six powered and coupled driving wheels on three axles and no trailing wheels. ...

type.

Class N: 2-6-6-2

Class N consisted of

articulated locomotive An articulated locomotive is a steam locomotive (rarely, an electric locomotive) with one or more engine units that can move independent of the main frame. Articulation allows the operation of locomotives that would otherwise be too large to neg ...

s of

2-6-6-2 Under the Whyte notation for the classification of steam locomotives by wheel arrangement, a 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 wheel ...

arrangement.

Class S: 4-8-4

Class S were

4-8-4 Under the Whyte notation for the classification of steam locomotives, represents the wheel arrangement of four leading wheels on two axles, eight powered and coupled driving wheels on four axles and four trailing wheels on two axles. The type w ...

"Northern" locomotives.

Class X: Shays

Class X consisted of

Shay locomotive The Shay locomotive is a geared steam locomotive that originated and was primarily used in North America. The locomotives were built to the patents of Ephraim Shay, who has been credited with the popularization of the concept of a ''geared s ...

s. * Milwaukee Road class X1 * Milwaukee Road class X2

Diesel

ALCO

Baldwin

Davenport

EMD

Switchers

Cab units

Cowl units

Hood units

Fairbanks-Morse

General Electric

Whitcomb

Electric

The Milwaukee Road was one of the most electrified railroads in the United States. The system used was 3,000

volt The volt (symbol: V) is the unit of electric potential, electric potential difference (voltage), and electromotive force in the International System of Units (SI). It is named after the Italian physicist Alessandro Volta (1745–1827). Defin ...

overhead line An overhead line or overhead wire is an electrical cable that is used to transmit electrical energy to electric locomotives, trolleybuses or trams. It is known variously as: * Overhead catenary * Overhead contact system (OCS) * Overhead equipm ...

Switchers

* Milwaukee Road class ES-1 - 1 example (built 1915), the

Great Falls, Montana Great Falls is the third most populous city in the U.S. state of Montana and the county seat of Cascade County. The population was 60,442 according to the 2020 census. The city covers an area of and is the principal city of the Great Falls, M ...

switcher. Used 1,500 volts DC. * Milwaukee Road class ES-2 - 4 examples (built 1916–19).

Passenger

Milwaukee Road class EP-1 The Chicago, Milwaukee, St. Paul and Pacific Railroad (Milwaukee Road) 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. T ...

- 12 2-unit boxcab sets (24 locomotives) built in 1915 by

ALCO The American Locomotive Company (often shortened to ALCO, ALCo or Alco) was an American manufacturer of locomotives, diesel generators, steel, and tanks that operated from 1901 to 1969. The company was formed by the merger of seven smaller locomo ...

/ GE. Converted to freight class EF-1 in 1920. In 1950, two boxcab two-unit sets were converted for passenger service (class EP-1A). *

Milwaukee Road class EP-2 The Milwaukee Road's class EP-2 comprised five electric locomotives built by General Electric in 1919. They were often known as Bipolars, which referred to the bipolar electric motors they used. Among the most distinctive and powerful electric ...

- The "Bi-Polars". 5 built by GE in 1919. * Milwaukee Road class EP-3 - The "Quills" (

quill drive A quill is a writing tool made from a moulted flight feather (preferably a primary wing-feather) of a large bird. Quills were used for writing with ink before the invention of the dip pen, the metal- nibbed pen, the fountain pen, and, eventuall ...

). 10 built by Baldwin/ Westinghouse in 1919. * Milwaukee Road class EP-4 - "Little Joes". Two examples built by GE in 1946. Converted to freight class EF-4 in 1956.

Freight

* Milwaukee Road class EF-1 - 30 two-unit boxcab sets (60 locomotives) built in 1915 by ALCO/GE, identical to EP-1 but for gearing and paint. In addition, the EP-1 units were converted to EF-1 specification in 1920. * Milwaukee Road class EF-2 - 3-unit boxcab sets formed from EF-1s in the 1930s. * Milwaukee Road class EF-3 - 3-unit boxcab sets formed from EF-1s with the middle unit shortened by removing the cab and leading truck; the resultant B units were known as "bobtails". * Milwaukee Road class EF-4 - "Little Joes". 10 examples built by GE in 1946 for the Soviet Ministry of Railways as Class A. In addition, the EP-4 locomotives were converted to EF-4 specification in 1956. *

Milwaukee Road class EF-5 Milwaukee ( ), officially the City of Milwaukee, is both the most populous and most densely populated city in the U.S. state of Wisconsin and the county seat of Milwaukee County, Wisconsin, Milwaukee County. With a population of 577,222 at th ...

- Four-unit boxcab sets formed with any combination of regular or bobtail units in the middle.

Preserved locomotives

Steam

Only six Milwaukee Road Steam locomotives survive: In addition, the tender from a class S2 locomotive also survives.

Electric

*10200A+B, later E50A+B - class EF-1 at the Lake Superior Railroad Museum in

Duluth, Minnesota , settlement_type = City , nicknames = Twin Ports (with Superior), Zenith City , motto = , image_skyline = , image_caption = Clockwise from top: urban Duluth skyline; Minnesota ...

*10211B, later E57B - class ES-3 at

Harlowton, Montana Harlowton is a city in and the county seat of Wheatland County, Montana, United States. The population was 955 at the 2020 census. Description The city was once the eastern terminus of electric operations (1914–74) for the "Pacific Extension ...

*10251, later E2 - class EP-2, at the

National Museum of Transportation The National Museum of Transportation (NMOT) is a private, 42-acre transportation museum in the Kirkwood suburb of St. Louis, Missouri. Founded in 1944, it restores, preserves, and displays a wide variety of vehicles spanning 15 decades of Amer ...

St. Louis, Missouri St. Louis () is the second-largest city in Missouri, United States. It sits near the confluence of the Mississippi and the Missouri Rivers. In 2020, the city proper had a population of 301,578, while the bi-state metropolitan area, which e ...

*E70 - class EF-4 at

Deer Lodge, Montana Deer Lodge is a city in and the county seat of Powell County, Montana, United States. The population was 2,938 at the 2020 census. Description The city is perhaps best known as the home of the Montana State Prison, a major local employer. ...

References

* * * *{{cite journal , last=Edson , first=William D. , date=Spring 1977 , title=Milwaukee Road All Time Steam, Diesel and Electric Roster , journal=Railroad History , issue=136 , pages=29–124 , publisher = The Railway and Locomotive Historical Society Inc. __NOTOC__

Locomotives A locomotive or engine is a rail transport vehicle that provides the motive power for a train. If a locomotive is capable of carrying a payload, it is usually rather referred to as a multiple unit, motor coach, railcar or power car; the ...

* Milwaukee Road