No. 4014 – the world’s only operational Big Boy – was originally delivered to Union Pacific in December 1941 to support the war effort. After a multi-year restoration project was completed …

Built in November 1941 by the American Locomotive Company (ALCO) in Schenectady, New York, it was assigned to haul heavy freight trains in the Wasatch mountain range.

2 days ago · Union Pacific announced Big Boy No. 4014 will make a coast-to-coast tour in 2026, possibly passing through Texas.

Union Pacific 4014 is the latest star in the railroad's growing collection of heritage steam locomotives. It returned to active service on May 2, 2019.

May 12, 2025 · After its retirement in 1961, Union Pacific reacquired and restored Big Boy No. 4014, launching it back into operational service. The locomotive, boasting unrivaled power and …

3 days ago · Union Pacific said the world’s largest operating steam locomotive will return to the rails in a big way in 2026 to celebrate America's 250th anniversary.

Jul 14, 2024 · Union Pacific 4014 is a steam locomotive owned and operated by the Union Pacific (UP) as part of its heritage fleet.

Jun 18, 2025 · The world's largest operating steam locomotive — Union Pacific Railroad's Big Boy No. 4014 — is scheduled to make two stops in Colorado during a limited 2025 tour.

Union Pacific Big Boy #4014 is the largest and most powerful operational steam locomotive in the United States. #4014 was delivered new to the Union Pacific in 1941 as a coal burning …

5 days ago · TOPEKA (KSNT) - Union Pacific is dropping new hints this week of a coast-to-coast journey for its historic locomotive nicknamed 'Big Boy' following its successful Heartland of …