The Big Boy No. 4014 isn't just the name of the Union Pacific locomotive, it's actually because it's the biggest boy.

In fact, it's the world biggest boy. Measuring at over 85 feet long, and weighing nearly 12,000 pounds, the Union Pacific Big Boy No. 4014 is a monster.

Jalopnik:

Union Pacific "Big Boys" are among the biggest steam engines built. They were designed during WWII to single-handedly haul a 3600 short-ton train up a 1.14% grade.

The Big Boy No. 4014 is going to make a small stop in Rochelle on Tuesday, July 30 from 9:45 to 10:30 a.m.

WIFR:

The stop comes as Union Pacific celebrates the 150th anniversary of the completion of the transcontinental railroad.

After two years of restoration, "Big Boy No. 4014" returns to the rails. It's the world's only operating Big Boy locomotive.

You can track the Big Boy No. 4014 locomotive during its "Great Race Across the Midwest" on Facebook and Twitter.

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