Union Pacific 844

Union Pacific No. 844 throwing a tall plume at Painted Rocks, Nevada, on a run from Elko to Sparks in April 2009. Delivered in 1944, this FEF-3 class 4-8-4 Northern was the last steam locomotive built for Union Pacific, and the railroad has never retired it, which makes it the only Class I North American steam locomotive never permanently withdrawn. It was back under steam at the Cheyenne steam shop in October 2026, making test runs to Speer, Wyoming, so the railroad's own living legend is working again alongside Big Boy.