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.

Hundreds of Kansans greet the world's largest steam locomotive, Big Boy No. 4014, on Oct. 17, 2024, in North Topeka. (Anna Kaminski/Kansas Reflector) TOPEKA — The train named Big Boy was late ...

Over a thousand people of all ages flocked to see Big Boy No. 4014, Union Pacific's sole operational Big Boy steam locomotive, in North Little Rock on Sunday evening.

The PTC (Positive Train Control) system on Union Pacific Big Boy 4014, the world’s largest operating steam locomotive, has been upgraded with a self-contained technology, which means the massive ...

The world’s largest steam locomotive, Big Boy No. 4014, rolls into Topeka on Oct. 17, 2024. (Photo by Anna Kaminski/Kansas Reflector) The train named Big Boy was late. Anticipation and ...