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Union Pacific No. 4019 was a four-cylinder articulated 4-8-8-4 steam locomotive owned by Union Pacific railroad it was built 1941 by Alco to solve a tractive power deficit with the 4-6-6-4 Challenger locomotives on the UP.

In 1959 it was retired and then scrapped in December 1961.

Trivia[]

  • No. 4019 was given experimental smoke deflectors in 1944-45, but later they were removed.
  • The number board from UP #4019, is displayed at the Forney Transportation Museum in Denver, Colorado.
  • One of the photographs demonstrating the 4019's career in service, both in black & white and in color is nevertheless one of the most popular pictures of the days of steam.

Gallery[]

List of Union Pacific Big Boy Locomotives
Real-Life Members: 4000400140024003400440054006400740084009401040114012401340144015401640174018401940204021402240234024
Fallen: 400040014002400340074008400940104011401340134015401640194020402140224024
Preserved: 40044005400640124014401740184023
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