A tribute to the Union Pacific 4-6-6-4 Challenger locomotive, the 3985 Union Pacific 3985 is a four-cylinder articulated 4-6-6-4 "Challenger"-type steam locomotive built in July 1943 by the American Locomotive Company (ALCO) of Schenectady, New York, for the Union Pacific Railroad. No. 3985 is one of only two Challengers still in existence and the only one to have operated in excursion service. No. 3985 operated in revenue service until 1957. It was then stored in the roundhouse in Cheyenne, Wyo

What is a hydrostatic test — and why is it such a big deal for No. 576? After years of meticulous restoration, Nashville’s steam locomotive is about to reach a major turning point, and the hydrostatic test is a critical step before a steam test. Follow along as Nashville Steam prepares this iconic locomotive for its comeback. Learn more and support the restoration at www.nashvillesteam.org | Nashville Steam