Pacing Union Pacific’s #3985 Locomotive

While making a run near Alexandria, Nebraska, engineer Ed Dickens and crew are clearly visible up in the cab of this magnificent beast!

Built specifically to take on long, steep grades , the #3985 Challenger was designed to pull freight without the benefit of helper engines.

Both UP #4014 “Big Boy” 4-8-8-4, and UP’s #3985 Challenger 4-6-6-4 are based at Union Pacific’s steam shop in Cheyenne, Wyoming.

Some quick facts about the UP #3985 Challenger

• Builder – American Locomotive Works – 1943
• Wheel configuration – 4-6-6-4
• Locomotive and tender weight – 1,073,900 lbs
• Tractive effort – 97,350 lbf
• Nicknamed – Challenger

Let us know if you have ever seen #3985 in action. We would love to hear about your expereince!