ROSEVILLE – Union Pacific's Big Boy No. 4014, the world's largest operating steam locomotive, will be on display in Roseville on Friday and Saturday as part of its 2024 Westward Bound Tour.

There are steam locomotives, and then there’s “Big Boy.” At 604 tons and 132 feet long and with a 4-8-8-4-wheel arrangement, it is the largest, most powerful steam locomotive in the world.

In early September, we took a weekend trip to Rochelle, Illinois, to see Union Pacific Big Boy No. 4014, the largest and most powerful operating steam locomotive in the world. Based in Cheyenne ...