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The world's largest operating steam train is in Denver. Union Pacific's legendary Big Boy No. 4014 locomotive made a pit stop in the Mile High City on Friday. It first rode the rails in the 1940s ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. DENVER (KDVR) — One of the world’s largest ...

DENVER (KDVR) — The world’s largest operating 1.2 million-pound steam locomotive is coming back to Colorado. The locomotive, known as Big Boy No. 4014, is 1.2 million pounds and 132 feet long, about ...

It doesn't get any bigger than this for train enthusiasts. The Union Pacific's Big Boy No. 4014 steam locomotive will rumble from Cheyenne south through Greeley and on to Denver this week, and you can ...

CN sets a grain movement record in September. Also, Canadian Pacific Kansas City’s (CPKC) KC locomotive shop reaches a safety milestone; and Union Pacific (UP) and Nestlé Purina’s Denver plant mark a ...

The world's largest steam engine is coming back to Colorado. Union Pacific's Big Boy No. 4014 was spotted in Denver before heading to northern Colorado and Cheyenne. Six more houses collapsed into the ...