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.

Big Boy No. 4014 Twenty-five Big Boys were built exclusively for Union Pacific Railroad, the first of which was delivered in 1941. The locomotives were 132 feet long and weighed 1.2 million pounds.

In 2024, Big Boy No. 4014 visited 14 of the 23 states served by Union Pacific, with full day stops in Roseville, Ogden, Rochelle, Houston and Fort Worth. Future schedules are still in the planning stage; stay tuned for updates!

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 t...

Aug 25, 2024 · Few steam locomotives compare to Union Pacific's (UP) colossus 4-8-8-4 "Big Boy." It was designed during the zenith of seam technology and earned celebrity status as soon as the first debuted in 1941.

Union Pacific 4014 is a preserved 4884-1 class 4-8-8-4 "Big Boy" type steam locomotive owned and operated by the Union Pacific (UP) as part of its heritage fleet.Built in November 1941 by American Locomotive Company (ALCO) in Schenectady, New York, it was assigned to haul heavy freight trains in the Wasatch mountain range.The locomotive was retired from revenue service on December 7, 1961, and ...

Aug 3, 2021 · A: Big Boy was built to go as fast as 70 mph, but the locomotives rarely ran more than 50 mph, a speed the UP still finds convenient. Q: How much can it pull? A: With more than 6,000-horsepower, Alco and Union Pacific designed Big Boy to pull a 3,600-ton train across the mountains of Utah and Wyoming.

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 19, 2022 · Five mind-blowing Big Boy facts: The sheer size of a Union Pacific Railroad Big Boy makes one stand in awe. To see No. 4014 run adds another dimension to the legendary story behind these mechanical wonders.

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 the Wasatch Mountains, where trains faced a continuous grade of 1.55 percent on a stretch of track east of Ogden, Utah.