Union Pacific 4014

Union Pacific 4014 is one of 8 surviving Big Boy locomotives and the only one in operating condition. The Big Boys were the largest steam locomotives ever built with a 4-8-8-4 wheel arrangement, 132 feet long, generating 7,000 horsepower and a top speed of 80 MPH. For the weekend of July 27-29, it was on display at the Larry S. Provo Training Center in West Chicago, IL.