Experience The Most Powerful Diesel Locomotives Ever Built

The Union Pacific DDA40X Centennials weighed in at 270 tons, were close to 100 feet long (98 feet 5 inches), carried an 8,000-gallon fuel tank, had 16-cylinder dual power plants that could generate 6,600 horsepower and attained speeds of up to 90 mph.

The "Big Jacks" were built for the Union Pacific by the Electro-Motive Division of GMC between 1969 and 1971. Within 5 years of service, most of the 47 units had racked up over 1,000,000 miles of duty.

Powerful as they were, they were also high maintenance and were being phased out of duty by the early 1980s. This is your chance to watch the Centennials travel across 5 different states.