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The Union Pacific Big Boy is a class of 4-8-8-4 articulated steam locomotives built by the American Locomotive Company (ALCO) between 1941 and 1944. Designed for heavy freight service, they were intended to pull long trains over the Wasatch mountains without the need for helper locomotives. A total...
Union Pacific No. 4014 is a 4-8-8-4 "Big Boy" articulated steam locomotive built by the American Locomotive Company (ALCO) in 1941. It was retired in 1961 and displayed at a park in Los Angeles until Union Pacific reacquired it in 2013. The railroad completed a multi-year restoration to operating co...
The Union Pacific Big Boy 4014 is a preserved, articulated steam locomotive representing one of the largest locomotives ever built. Constructed in 1941, its immense size – a 4-8-8-4 wheel arrangement – allowed it to haul heavy freight trains across challenging terrain. Now operated by the National M...
