15 Best Big Boy Locomotive Models (June 2026) Expert Reviews
The Union Pacific Big Boy represents the pinnacle of American steam locomotive engineering. Built in the 1940s, these massive 4-8-8-4 articulated locomotives were designed specifically to conquer the steep grades of the Wasatch Mountains. Only 25 were ever built, and today Big Boy 4014 stands as the only operational example, restored to running condition by … Read more