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The Union Pacific Big Boy is a type of simple articulated 4-8-8-4 steam locomotive manufactured by the American Locomotive Company (ALCO) between 1941 and 1944 and operated by the Union Pacific Railroad in revenue service until 1962.
Union Pacific reacquired No. 4014 from the RailGiants Museum in Pomona, California, in 2013, and relocated it back to Cheyenne to begin a multi-year restoration process. It returned to service in May 2019 to celebrate the 150th Anniversary of the Transcontinental Railroad's Completion.
Earlier this summer, Union Pacific's legendary Big Boy No. 4014 toured in five states during its 2024 Westward Bound Tour from Wyoming to California. In addition, this mighty steam locomotive was on public display for two days each in Roseville, California and Ogden, Utah.
In this special episode, Jay Leno explores the world’s largest steam engine—the iconic Union Pacific "Big Boy." This 600-ton behemoth, originally built in 19...
Union Pacific 4014 is a steam locomotive owned and operated by the Union Pacific (UP) as part of its heritage fleet. It is a four-cylinder simple articulated 4-8-8-4 " Big Boy " type built in 1941 by the American Locomotive Company (ALCO) at its Schenectady Locomotive Works.
During World War II Union Pacific operated some of the most modern and powerful steam locomotives ever built. Among them were the famous "Big Boys," the largest steam locomotives in the world. Working with them were the "800-class" high-speed passenger locomotives, as well as hundreds of older class steam engines.
5 days ago · Big Boy, one of the largest and most powerful series of steam locomotives ever built. Produced from 1941 to 1944 by the American Locomotive Company of Schenectady, N.Y., exclusively for the Union Pacific Railroad, the Big Boy locomotives were designed primarily to handle heavy freight traffic in.
Union Pacific 4012, nicknamed "Big Boy", is a 4-8-8-4 type locomotive built by American Locomotive Company in November 1941. It is among the world's largest steam locomotives. One of 25 built, No. 4012 is one of eight of its type to survive the advent of the diesel era.
Union Pacific #4017 “Big Boy”. Weighing in at 1.1 million pounds and measuring nearly half a football field in length, the “Big Boy” locomotives were designed to haul heavy freight for the Union Pacific railroad over the mountainous regions of Utah and Wyoming.
Aug 25, 2024 · Pulled from retirement to handle a surge in freight business, Union Pacific 4-8-8-4 #4007 steams westbound as it climbs Sherman Hill on the new single-track, low-grade line west of Cheyenne, Wyoming on a late summer's afternoon in 1958. James Ehernberger photo. Author's collection.
