Built in November 1941 by the American Locomotive Company in Schenectady, New York, it was assigned to haul heavy freight trains in the Wasatch mountain range.

Big Boy No. 4014 is the world’s largest operating steam locomotive. Of the eight remaining Big Boys in existence today, No. 4014 is the only one still in operation. Twenty-five Big Boys were …

Union Pacific Railroad's 4014 "Big Boy" is the largest operational steam locomotive in the world. It was restored by the railroad in 2019 in celebration of the 150th anniversary of the completion...

Feb 25, 2025 · Union Pacific 4014 is the latest star in the railroad's growing collection of heritage steam locomotives. It returned to active service on May 2, 2019.

Feb 17, 2025 · Big Boy 4014, a legendary steam locomotive, holds a place of honor in American rail history. Built in 1941, this behemoth of a train was an engineering marvel of its time, …

UP 4014 thunders past a switch as it departs the yard in Laramie in late 1956. 4014 is nearing the end of its service life, its first one, that is. In 2013, UP purchased the massive locomotive from …

Manufactured by the American Locomotive Company (ALCO) in November 1941, it is a 4-8-8-4 articulated locomotive designed to haul heavy freight over the Wasatch Mountains in Utah. No. …