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

(NEXSTAR) — The ground rumbles. A billowing cloud of steam forms in the sky. Then suddenly, the 1.2 million-pound locomotive known as Big Boy No. 4014 is pulling into a station near you. It won’t be ...

DENVER (KDVR) — “Big Boy,” a 1.2 million-pound locomotive, is back in Colorado after being restored to the world’s largest operating steam locomotive — and there’s one more chance to see it this ...

(NEXSTAR) – There will be countless celebrations this year in honor of America’s semiquincentennial (aka, its 250th anniversary), but none may be as massive as a 1.2 million-pound locomotive rolling ...

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 ...

In the 1950s, a new kind of locomotive made even extreme hills easy for trains to climb. But this extra-powerful engine came ...

CHEYENNE, Wyo. — The world's largest steam engine will return to the rails in 2026. Union Pacific Railroad said Big Boy No. 4014 will return to the rails in a "big way" in honor of America's 250th ...

OMAHA, Neb. – Union Pacific will join the nation in celebrating 250 years of American independence and innovation this year with its first-ever coast-to-coast steam tour led by the legendary Big Boy ...