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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Union Pacific's Big Boy No. 4014 will return to the rails this week for a nearly month-long tour of Wyoming, Nebraska, and Iowa as it travels to Omaha, where it will be on display for the NCAA Men's College World Series in mid-June.
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.
4014 restoration cost, but Wrinn estimated at least $4 million based on similar restorations. The result will be one of just six to eight steam engines still operational on mainline U.S. railroad tracks. “Living Legend” Northern No. 844 has remained in service since 1944.
The Big Boys were built for power. They did the work of three smaller engines, pulling 120-car, 3800 ton freight trains at forty miles per hour in the mountains of Utah and Wyoming. With power, though, comes weight - larger cylinders, pistons, drive rods, boiler and firebox.
In PTC territory the diesel is part of safety measures. Like any other mainline steam locomotive that was built to burn coal but after leaving the locomotive's assembly plant or during a restoration to operating condition had it converted to burn fuel oil.
2023 ScheduleIn 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 !
Its girth requires a 4-8-8-4 wheel configuration to keep it rock-steady on the rails. With a puny 7,000 horsepower, Big Boys had a maximum tractive power of 135,375 pounds, all to pull huge loads of freight across steep grades in Utah's Wasatch Mountains and the Rockies.
Of the eighteen built, three survive and are on display in Minnesota: No. 225 at Proctor, No. 227 at the Lake Superior Railroad Museum in Duluth and No. 229 at Two Harbors.
The Union Pacific locomotive, known as Big Boy 4014, is the largest locomotive ever constructed. It just rolled in to Southern California after a massive restoration project.
The Big Boy No. 4014 steam locomotive rolled out of a Union Pacific restoration shop in Cheyenne for a big debut after five years of restoration. It then headed toward Utah as part of a yearlong tour to commemorate the Transcontinental Railroad's 150th anniversary.
As an example Southern Railway 2-8-2, # 4501 in excursion service averaged about 13 miles to the ton of coal and approximately 100 gallons of water to the mile. Larger engines such as N&W 611 were probably in the 150-200 gallon range. 1218 was hungrier, and thirstier, 11miles/ton and 130 gallons.