The American Locomotive Company built just 25 Big Boy models for Union Pacific during World War II. Big Boy No. 4014 is a 132-foot-long, 1.2-million-pound locomotive with a water capacity of ...
DENVER (KDVR) — One of the world’s largest locomotives passed through Colorado in October, operating much like it did when it was first built in the mid-1900s. The train, known as Big Boy No.