The 133-foot-long locomotive is the only Big Boy to still travel the tracks.

Cheyenne-based Big Boy 4014, the world's largest operating steam locomotive, will make its first ever coast-to-coast tour ...

For the first time ever, both coasts could receive a visit from the world's largest operating steam locomotive.

Big Boy No. 4014, described as "the Elvis Presley of locomotives," could begin its first ever coast-to-coast tour in just a ...