Private company

Morrison-Knudsen

Logo: Morrison-Knudsen Rail Systems Group, Public domain, via Wikimedia Commons3

American engineering company

Morrison–Knudsen (MK) was an American civil engineering and construction company, with headquarters in Boise, Idaho. 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.2 It ceased to exist in 1996.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1912Founded1
  • Industryconstruction industry, transport industry1
  • HeadquartersBoise1

Morrison–Knudsen (MK) was an American civil engineering and construction company, with headquarters in Boise, Idaho.2

The story

MK's origins date to 1905, when Harry Morrison, Chairman and President met Morris Knudsen while working on the construction of the New York Canal (Boise Project) in southwestern Idaho. Morrison was a 20-year-old concrete superintendent for the Reclamation Service; Knudsen was a forty-something Nebraska farmer (and Danish immigrant) with a team of horses and a fresno scraper.

Their first venture together was in 1912, on a pump plant in nearby Grand View for $14,000; they lost money but gained experience. MK earned some revenue in 1914, when they constructed the Three Mile Falls Diversion Dam, south of Umatilla, Oregon. For several years, the firm built irrigation canals, logging roads, and railways; they incorporated in 1923, the year gross revenues topped $1 million. MK reached a significant milestone with its joint venture in the construction of Hoover Dam (1932–1935).

From Wikipedia’s article on Morrison–Knudsen, shared under CC BY-SA 4.0.4

Products and brands

  • diesel locomotive

Listed on Wikidata.1

Timeline

  1. 1996Dissolved Dissolved1
  2. 1912Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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