SOO 2-10-0 No. 950 at Ashland, Wisconsin, early 1950s. Photo Carl H. Sturner Collection.

(Audio-Visual Designs, Earlton, NY, Public domain, via W. Lenheim Collection)



The Minneapolis, St. Paul and Sault Ste. Marie Railroad (MStP&SSM) (reporting mark SOO) was a Class I railroad subsidiary of the Canadian Pacific Railway in the Midwestern United States. Commonly known since its opening in 1884 as the Soo Line after the phonetic spelling of Sault, it was merged with several other major CP subsidiaries on January 1, 1961, to form the Soo Line Railroad.


A postcard advertisement for the railroad's service between Minneapolis/St. Paul and Duluth/Superior, circa 1910.

(Soo Line, Public domain, via Wikimedia Commons)


Passenger service

The Soo Line was never a major carrier of passenger traffic since its route between Chicago and Minneapolis was much longer than the competing Chicago, Milwaukee, St. Paul and Pacific Railroad (Milwaukee Road), Chicago and North Western Railway, and Chicago, Burlington and Quincy Railroad (Burlington Route) routes. It also had no direct access to Milwaukee.

The primary trains operated by the Soo Line were:

  • The Laker which operated an overnight service from Chicago's Grand Central Station to Duluth–Superior with a portion to Minneapolis–St. Paul. An additional portion served Ashland, Wisconsin, until January 1959. The Laker was discontinued completely on January 15, 1965.
  • The Winnipeger which operated overnight between Minneapolis–St. Paul and Winnipeg. It was discontinued in March 1967.
  • A Minneapolis–St. Paul to Western Canada service. During the 1920s and 1930s, the Soo Line operated the Soo-Pacific, a summer-only Chicago to Vancouver service with the Canadian Pacific Railway. This later became The Mountaineer, which was then reduced to Minneapolis–St. Paul to Vancouver, before being discontinued in early August 1960. The Mountaineer was a summer-season-only train that carried exclusively sleeping cars but no coaches. During the non-summer months, the train ran as the Soo-Dominion from Minneapolis–St. Paul to Moose Jaw, Saskatchewan, where it was combined into Canadian Pacific's The Dominion transcontinental passenger train. It was cut back to a St. Paul to Portal, North Dakota, run after CP discontinued passenger service to Portal at the end of 1960, before being discontinued entirely in December 1963.
  • A Minneapolis–St. Paul to Sault Ste. Marie, Michigan, overnight train, which was discontinued in March 1959.

Additionally, local trains served Chicago to Minneapolis–St. Paul, Duluth–Superior to Minneapolis–St. Paul, Duluth to Thief River Falls, Minnesota, and some summer-only services which relieved The Mountaineer of the local work along its route.


A well-used Soo Line ore car, built in 1916. Hauling iron ore was an important part of the Soo Line's business. (James St. John, CC BY 2.0 <>, via Wikimedia Commons)


Soo Line Steam Crane No. W2 picking up a derailment at the Chippewa Falls, WI Yard. The derailment is right in front of the Yard Office, February 16, 1958. Photo courtesy A. Robert Johnson. (© Mary Jayne's Railroad Specialties, Inc., Fair Use, Title 17, Section 107, via the W. Lenheim Collection)



The Presidents of the Minneapolis, St. Paul and Sault Ste. Marie Railroad were:

  • William D. Washburn, 1883–1889
  • Thomas Lowry, 1889–1890, 1892–1909
  • F. N. Finney, 1890–1892
  • Edmund Pennington, 1909–1922
  • George Ray Huntington, 1922–1923
  • C. T. Jaffray, 1924–1937
  • G. W. Webster, 1937–1944
  • H. C. Grout, 1944–1949
  • G. Allen MacNamara, 1950–1960


The Soo Line Building in Minneapolis served as company headquarters.

(This work has been released into the public domain by its author, Mulad. This applies worldwide.)



  • September 29, 1883: A consortium of flour mill owners in Minneapolis form the Minneapolis, Sault Ste. Marie and Atlantic Railway to build a railroad between its two namesake cities to avoid sending shipments through Chicago.
  • February 23, 1884: The presidents of the Minneapolis, Sault Ste. Marie and Atlantic Railway and the Northern Pacific Railway sign an agreement allowing the MSSM&A to use in perpetuity NP track and facilities in Minneapolis and granting an entry to Saint Paul Union Depot. NP's board of directors approved the agreement on March 6.
  • March 1884: The first construction contracts are awarded for grading 60 miles (97 km) of line starting from a point near Turtle Lake, Wisconsin. President Washburn receives authorization from the board of directors to place orders for rolling stock.
  • November 7, 1884: The ceremonial first train departed Minneapolis to tour from there to Bruce, Wisconsin, the extent of the line that had been constructed so far. On its opening for regular service on November 15, the line measured 46 miles (74 km).
  • January 5, 1888: The MSSM&A's first train departed Minneapolis with 102 cars of flour divided into five sections for Boston, New York City, Philadelphia, London, England and Glasgow, Scotland.
  • June 11, 1888: The Canadian Pacific Railway acquires control of the Minneapolis, Sault Ste. Marie and Atlantic Railway, consolidating it with the Minneapolis and Pacific Railway, Minneapolis and St. Croix Railway, and Aberdeen, Bismarck and North Western Railway to form the Minneapolis, St. Paul and Sault Ste. Marie Railway.
  • 1904: The Soo Line acquires the Bismarck, Washburn and Great Falls Railway.
  • 1908: The Soo Line acquires a majority interest in the Wisconsin Central Railway, and obtains a 99-year lease of the property in 1909.
  • 1910: The Soo line acquires the Cuyuna Iron Range Railway.
  • 1913: The Soo Line acquires the Minnesota Northwestern Electric Railway and the Fairmount and Veblen Railway.
  • 1921: The Soo Line acquires the Wisconsin and Northern Railroad.
  • 1932: The Wisconsin Central Railway enters receivership.
  • December 31, 1937: The Minneapolis, St. Paul and Sault Ste. Marie Railway files for bankruptcy.
  • 1944: The Wisconsin Central Railway enters bankruptcy.
  • September 1, 1944: The Soo Line reorganization takes effect, emerging as the Minneapolis, St. Paul and Sault Ste. Marie Railroad.
  • 1953: The Valley City Street and Interuban Railway is sold to the Soo Line.
  • 1954: The Wisconsin Central emerges from its bankruptcy as the Wisconsin Central Railroad.
  • January 1, 1961: The Soo Line Railroad is formed through a merger of the Minneapolis, St. Paul and Sault Ste. Marie Railroad, Wisconsin Central Railroad, and Duluth, South Shore and Atlantic Railroad.



See Main article: Soo Line locomotives


Soo Line 1003, a 2-8-2, in Slinger, Wisconsin, on November 2, 2019.

(Cr4410, CC BY-SA 4.0 <>, via Wikimedia Commons)



A number of the railroad's rolling stock have been preserved in museums across the United States, some in operational condition. This list includes some of the more notable equipment.


Steam locomotives*

  • 321, restored B class 0-6-0 built in 1887 by Rhode Island Locomotive Works. Later rebuilt as an 0-6-0 tank engine, numbered X-90 and used as a shop switcher. Rebuilt back to a tender engine in preservation.
  • 346, restored B-4 class 0-6-0 built in 1915 by ALCO.
  • 353, restored B-4 class 0-6-0 built in 1920 by ALCO.
  • 440, restored F-8 class 2-8-0 built by ALCO, displayed in Memorial Park in Harvey, North Dakota.
  • 735, restored H-3 class 4-6-2 built by ALCO, displayed in Roosevelt Park in Minot, North Dakota.
  • 950, a 2-10-0, the only one of its type owned by Soo Line, displayed in front of the old depot in Ashland, Wisconsin.
  • 1003, restored L-1 class 2-8-2 built in 1913 by ALCO.
  • Soo Line 1024, restored 2-8-2, on display at city hall, Thief River Falls, Minnesota.
  • 2645, E-25 class 4-6-0 built by Brooks Locomotive Works in 1900 for the Wisconsin Central Railway as their 247.
  • 2713, restored H-21 class 4-6-2 built in 1913 by ALCO Schenectady. It is in Veterans Memorial Park in Stevens Point, Wisconsin. With it is Soo Line caboose 99052, built in 1908 for the Wisconsin Central Railway, their 158.
  • 2714, restored H-22 class 4-6-2 built in 1914 by ALCO Schenectady. It is in Lakeside Park in Fond du Lac, Wisconsin.
  • 2718, restored H-23 class 4-6-2 built in 1923 by ALCO.
  • 2719, restored H-23 class 4-6-2 built in 1923 by ALCO. This locomotive hauled the Soo Line's last steam-powered train in excursion service in 1959.

*This is an incomplete list.


Soo Line 4-8-4 Northern-type locomotive No. 5000 as seen at Chippewa Falls, Wisconsin, July 1951. Photo courtesy A. Robert Johnson.

(© Mary Jayne's Railroad Specialties, Inc., Fair Use, Title 17, Section 107, via the W. Lenheim Collection)



Parent company: Canadian Pacific Railway
Headquarters: Minneapolis, Minnesota
Reporting mark: SOO
Locale: North Dakota to Chicago
Dates of operation: 1883–1961
Successor: Soo Line Railroad
Track gauge: 4 ft 8+1⁄2 in (1,435 mm) standard gauge