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Morrison–Knudsen (MK) was an American civil engineering and construction company, with headquarters in Boise, Idaho. [7] [8]MK designed and constructed major infrastructure throughout the world and was one of the consortium of firms that built Hoover Dam, San Francisco–Oakland Bay Bridge, the Trans-Alaska Pipeline, and many other large projects of American infrastructure.
The MK5000C is a 5,000 hp (3.7 MW) North American diesel-electric locomotive developed by MK Rail.At the time of its introduction in 1994, the MK5000C was the most powerful single prime mover diesel-electric locomotive ever made, a title it would hold for only for one year until GE Transportation released its competing 6,000 hp (4.5 MW) AC6000CW model in 1995.
Morrison-Knudsen established a separate rail division, MK Rail, in 1972. [1] Morrison-Knudsen spun-off the division in 1993; it became a publicly traded company in 1994. After Morrison-Knudsen's bankruptcy in 1996, MK Rail renamed itself "MotivePower Industries", doing business as "Boise Locomot
Morrison-Knudsen was the last American builder of railcars, and heavily underbid on contracts, including on this contract, to gain a large share of the market. [19] Morrison-Knudsen had almost no experience in the design of passenger railcars, and did not build a prototype for the M6. As a result, the first cars were rejected by Metro-North. [20]
Electro-Motive Division manufactured 475 F40PHs of all types between 1975 and 1992. The orders for GO Transit and VIA Rail Canada were built by General Motors Diesel (GMD), the company's Canadian subsidiary. Morrison-Knudsen (M-K) and its successor MotivePower (MPI) remanufactured another 31 locomotives between 1988 and 1998. [17]
The M-K TE70-4S was a four-axle 2,800 hp (2.1 MW) B-B diesel-electric locomotive built by Morrison-Knudsen. The locomotive was a rebuild of the GE U25B with a Sulzer V-12 prime mover installed. Morrison-Knudsen rebuilt four for the Southern Pacific Railroad in 1978. The experiment proved unsuccessful and no additional units were rebuilt.
In the late 1980s, Morrison-Knudsen rebuilt six GP40s into 12-cylinder GP39s for MARC. They were downgraded from 3,000 horsepower (2,200 kW) to 2,300 horsepower (1,700 kW), and re-equipped with 4-stroke Cummins HEP generators. As of 2023, all were rebuilt as GP39PH-3Cs, and they continue to be used by MARC for smaller train sets and work train ...
Sioux Falls, Yankton and South Western Railway: GN: 1889 1893 Willmar and Sioux Falls Railway: Sisseton Southern Railway: SSOR 1987 1989 Sisseton Milbank Railroad: South Dakota Central Railway: GN: 1903 1916 Watertown and Sioux Falls Railway: South Dakota Western Railway: CNW: 1890 1891 Fremont, Elkhorn and Missouri Valley Railroad: South Sioux ...