Cody Park Railroad Museum offers an unusually direct comparison between two generations of Union Pacific power. The steam locomotive is Challenger No. 3977, a member of the railroad’s 3900 series. Its neighbor is diesel-electric No. 6922, one of the much later Centennial locomotives. Both are conspicuously large, but their size conceals quite different solutions to the same problem: getting enough power to move a heavy train over a long route.
Look at the wheels and machinery before moving on to the equipment behind the engines. The Challenger’s two groups of driving wheels helped distribute power while allowing the locomotive to negotiate curves. Steam required space for the boiler and firebox, along with a tender to supply fuel and water. The Centennial represents a different arrangement. Union Pacific describes the class as essentially two engines on one frame. Putting the two locomotives side by side makes it easier to see what changed when railroads moved from steam to diesel and what did not: a long freight train still demanded considerable power.
The display also includes a mail car, a caboose and the former depot from Hershey, Nebraska. These are useful stops after the big engines. The mail car represents a service that depended on the railway timetable, while the caboose suggests the working conditions of a freight crew. The depot gives visitors a view of the railway from the perspective of a community beside the line. Historical objects displayed in the buildings and cars bring those jobs down to a human scale.
The attraction is in North Platte, a city with a continuing Union Pacific presence. Cody Park’s retired equipment explains the earlier generations of that railway and is a separate destination from other North Platte rail attractions. The visitor bureau describes opportunities to see the engineer’s view and explore some historic cars.
Visitor information
Researched November 2026.
Sources
More railroad museums in Nebraska
- Rock Island Railroad Depot Museum — Fairbury: Depot and railroad history museum
- Stuhr Museum — Railroad Heritage — Grand Island: Living-history museum with railroad heritage
- The Durham Museum — Omaha: Historic station museum with railroad collection
- Trails and Rails Museum — Kearney: Local history museum with railroad collection
- All 5 railroad museums and sites in Nebraska
Keep exploring
- All heritage sites — museums, stations and landmarks
- Midwest — the trains you can ride in the region