American Locomotive Company (ALCO) was a locomotive manufacturing company that existed from 1901 to 1969. a subsidiary, MLW of Canada, existed from 1882 to 1995.

The official ALCO logo.

The ALCO name still exists today, but is owned by a completely different modern-day company.


ALCO was a conglomeration of several smaller locomotive manufacturing companies into one corporation. The companies merged included the Brooks Locomotive Company, Cooke Locomotive and Machine Company, Dickson Manufacturing Company, Manchester Locomotive Works, Pittsburgh Locomotive and Car Works, Rhode Island Locomotive Works, Richmond Locomotive Works, and the Schenectady Locomotive Works. The company was headquartered and founded in Schenectady, New York and produced over 150 different types of steam, diesel, and electric locomotives. They also exported many different locomotives to foreign countries. They've also produced some of the largest steam locomotives ever built, as well as powerful turbine locomotive types with General Electric (GE) during World War 2 (their long-term affiliate), and have had many numerous locomotives rebuilt from the Morrison-Knudsen company due to their partnership with the MLW (Montreal Locomotive Works) until 1995.

List of locomotivesEdit

Steam LocomotivesEdit

  • 0-6-0T Tank Engine
  • 2-6-0 "Mogul"
  • 2-8-0 "Consolidation"
  • 2-8-2 "Mikado"
  • 2-6-4 "Atlantic"
  • 4-6-2 "Pacific"
  • 4-6-4 "Hudson"
  • 2-8-4 "Berkshire"
  • 4-8-2 "Mountain"
  • 4-8-4 "Northern"
  • 2-10-0 "Decapod"
  • 4-6-6-4 "Challenger" (Union Pacific, Denver and Rio Grande Western, Northern Pacific, Spokane, Portland, and Seattle)
  • 4-8-8-4 4000 Class "Big Boy" (Union Pacific; secondclargest steam locomotive ever built in history, after the Santa Fe 2-10-10-2)

Diesel LocomotivesEdit


  • HH300
  • HH600
  • HH660
  • HH900
  • HH1000
  • S-1
  • S-2
  • S-3
  • S-4
  • DL240
  • S-5
  • S-6
  • T-6
  • SSB-9 (Cow-calf S-6 set.  Two sets built)

RS SeriesEdit

  • RS-1
  • RS-2
  • RS-3
  • RS-11
  • RS-27
  • RS-32
  • RS-36
  • RSC-1
  • RSC-2
  • RSC-3
  • RSD-1
  • MRS-1
  • RSD-4
  • RSD-5
  • RSD-7
  • RSD-12
  • RSD-15
    UP ALCO C-630

    An ALCO diesel locomotive.

F Cab and Booster SeriesEdit

  • black maria a+b
  • FA-1 (FB-1)
  • FA-2 (FB-2)
  • FA-4 (FB-4)  built for Canadian National only by MLW

PA SeriesEdit

  • PA-1
    UP Big Boy

    The 4000 Class "Big Boy", is the largest steam locomotive ever built in history (though debatable).

  • PA-1
  • PA-B

PB SeriesEdit

  • PB-1
  • PB-2
  • PB-B

Century SeriesEdit

  • C-415
  • C-420
  • C-424
  • C-425
  • C-430
  • C-628
  • C-630
  • C-636
  • C-643DH
  • C-855 (Largest diesel locomotive built by the company)


  • RSD-39 (Experimental turbo-charged diesel locomotive)

Electric LocomotivesEdit

  • S-1/SS-1(GE affiliated)
  • 1000 Class (GE affiliated)

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.