Big Boy 2024 Roseville Ca. 4014, the world’s largest steam locomotive, will return to the rails in 2024 for a tour celebrating the railroad’s deep. 4014, the world’s largest steam locomotive, will return to the rails this summer with a scenic tour across mountain ranges and high desert vistas in.

As part of union pacific’s ‘big boy’ up4014 2024 westward bound tour, roseville was one of two major display days stops as the worlds largest operating steam locomotive. The big boy as of this recording was currently on its westward.