Minneapolis, St. Paul and Sault Ste. Marie Railroad
A postcard advertisement for the railroad's service between Minneapolis/St. Paul and Duluth/Superior, circa 1910 | |
| Overview | |
|---|---|
| Parent company | Canadian Pacific Railway, Canadian National Railway |
| Headquarters | Minneapolis, Minnesota |
| Reporting mark | SOO |
| Locale | North Dakota to Chicago |
| Dates of operation | 1883–1961 |
| Successor | Soo Line Railroad, Canadian National Railway |
| Technical | |
| Track gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge |
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.