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What was the heaviest locomotive?

It is generally agreed that the largest steam locomotives are the 4-8-8-4 'Big Boys', built by the American Locomotive Company in 1941-44. They are 39.852 m (130.74 ft) long and weigh 508.02 tonnes (1.12 million lb) with tenders.



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It is generally agreed that the largest steam locomotives are the 4-8-8-4 'Big Boys', built by the American Locomotive Company in 1941-44. They are 39.852 m (130.74 ft) long and weigh 508.02 tonnes (1.12 million lb) with tenders.

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Twenty-five Big Boy locomotives were built for Union Pacific to haul freight over the steep grade of the Wasatch Mountain Range in Utah during World War II. Eight were preserved after the locomotive was retired six decades ago, but only Big Boy No. 4014 is still in operation.

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Twenty-five Big Boys were built exclusively for Union Pacific Railroad, the first of which was delivered in 1941. Of the eight remaining Big Boys in existence, No. 4014 is the only one operating today. The Big Boys were about 133 feet long and weigh 1.2 million pounds.

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1 (originally named Active) is an early steam locomotive that was built in 1825 by the pioneering railway engineers George and Robert Stephenson at their manufacturing firm, Robert Stephenson and Company.

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Locomotive 'Puffing Billy'. Puffing Billy is the world's oldest surviving steam locomotive. Dating to 1813-1814, it was built by William Hedley, Jonathan Forster, and Timothy Hackworth, for use at the Wylam Colliery near Newcastle-Upon-Tyne.

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2023 Schedule In 2023, Big Boy No. 4014 visited Omaha on the Home Run Express during June. To be notified of future steam schedule updates, join the Official Union Pacific Steam Club at http://up.com/SteamClub !

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4014 restoration cost, but Wrinn estimated at least $4 million based on similar restorations.

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