Union Pacific’s Big Boy, a 1.2 million-pound steam locomotive first put into service in 1941, rolls into Kansas City on Tuesday, Oct. 15, 2024. Dominick Williams [email protected] ...

Big Boy No. 4014 calls Cheyenne home, along with Union Pacific’s Steam Shop and the other historic locomotive, UP No. 844. Union Pacific also has nearly 800 employees in Wyoming.

Big Boy No. 4014 is a 132-foot-long, 1.2-million-pound locomotive with a water capacity of 25,000 gallons. It was in service for Union Pacific from 1941 to 1961, traveling more than a million miles!