Most steam locomotives are remembered by railroad historians and not many others. No. 1225 is the exception. This Pere Marquette Berkshire became the real-world inspiration for one of the most beloved Christmas stories of the last fifty years, and it’s still running seasonal excursions today, decades after a young boy climbed on its static display and let his imagination take over. It’s the kind of story that even people who’ve never set foot on a train platform end up knowing, whether they realize it or not.
No. 1225 is a 2-8-4 Berkshire-type locomotive, N-1 class, built in October 1941 by Lima Locomotive Works for the Pere Marquette Railway. Like other Berkshires of its era, it was designed for fast freight service, with a total engine weight of 802,500 pounds, a locomotive weight alone of 442,500 pounds, and 245 psi of boiler pressure driving 69-inch drivers to produce 69,350 pounds of tractive effort. Those are the specifications of a locomotive built to move heavy freight quickly across a regional Midwest network.
The Pere Marquette Railway itself was a regional carrier serving Michigan and neighboring states, and locomotives like No. 1225 were the backbone of its freight operations heading into the Second World War, a period when railroads across the country were leaning hard on their newest, most capable steam power.
It kept working after the Pere Marquette merged into the Chesapeake & Ohio Railway in 1947, continuing in service under its new owner until its retirement in 1951, a working career of exactly a decade spanning two different corporate identities on its builder’s plate.
Rather than being scrapped, which was the fate of so many retired steam locomotives once their revenue-earning days ended, No. 1225 was donated to Michigan State University in 1957 and put on display near Spartan Stadium. It was there, admiring the static locomotive, that a young Chris Van Allsburg first encountered it, climbing on the cold engine the way generations of kids have climbed on preserved locomotives across the country. For most of those locomotives, that’s the end of the story: a quiet retirement as a static exhibit, admired but never heard again. No. 1225’s path diverged from that pattern in a way almost nobody could have predicted at the time.
In 1969, the MSU Railroad Club launched “Project 1225,” an effort to bring the locomotive back to operating condition. That kind of restoration takes patience measured in decades, not years, and it also takes a steady stream of new volunteers willing to pick up where earlier ones left off as students graduated and moved on. The rebuild eventually moved to Owosso, Michigan in 1982 to continue the work, and No. 1225 moved under its own power again in 1985, sixteen years after the project began.
That same year, No. 1225’s connection to Van Allsburg came full circle: his 1985 book The Polar Express was directly inspired by his childhood memory of the locomotive he’d once climbed on outside Spartan Stadium. When Warner Bros. adapted the book into the 2004 film of the same name, the production team went back to No. 1225’s original builder’s blueprints to model the CGI locomotive that appears on screen, and they recorded the real engine’s sounds for the film’s soundtrack, so the hiss of steam and the chuff of the drivers that audiences heard in theaters actually came from No. 1225 itself. Since 2004, the Steam Railroading Institute has run seasonal “North Pole Express” excursions aboard No. 1225 every holiday season.
No. 1225 is based in Owosso, Michigan, owned and operated by the Steam Railroading Institute. Its current status is operational, and it carries the distinction of being the inspiration for The Polar Express, a fact that draws visitors who might never otherwise think about steam locomotive preservation, and who show up at Owosso every winter specifically because of a movie they grew up watching, many of them bringing their own kids along for the same first encounter Van Allsburg once had.
You can find the full spec sheet for No. 1225 at its Steam Engine Database entry here, including its complete build history and specifications.
If you plan a visit, timing matters. No. 1225’s most famous public role, the North Pole Express, only runs in the winter holiday season, so anyone hoping to make the Polar Express connection in person should plan around that window rather than a summer trip. Owosso itself has embraced that identity too, with the Steam Railroading Institute serving as both the caretaker of the locomotive and the organizer of the annual event that brings families out to see it.
No. 1225 occupies a unique place in railroad history because its cultural significance reaches so far beyond the railfan community. Most preserved steam locomotives are appreciated by people who already know what a Berkshire is or why a 2-8-4 wheel arrangement mattered on a fast-freight railroad. No. 1225 is appreciated by millions of people who’ve watched The Polar Express and had no idea the train on screen was modeled directly from a real, still-running Michigan locomotive.
That connection also did something practical: it helped keep interest, and funding, alive for a restoration project that started all the way back in 1969 and took sixteen years to put the locomotive back under its own power. The fact that Warner Bros. used No. 1225’s actual builder’s blueprints and recorded its real sounds for the film shows how seriously that connection was taken, and it’s part of why the Steam Railroading Institute has been able to keep running the North Pole Express excursions every year since 2004. Very few steam locomotives can claim to have shaped a piece of American popular culture the way No. 1225 has, and that’s worth remembering the next time you see the film during the holidays.
There’s a broader lesson in No. 1225’s story too, one I think about often in this line of work. Preservation projects live or die on public interest and volunteer commitment, and it’s rare for either to sustain a sixteen-year restoration effort without some kind of spark. For No. 1225, that spark turned out to be a picture book written by a man who once climbed on the very same locomotive as a kid. You never know which static display, sitting quietly near a stadium or a museum lot, might end up inspiring the next generation to bring it back to life.
What book and movie was No. 1225 the inspiration for?
No. 1225 inspired Chris Van Allsburg’s 1985 book The Polar Express, and its blueprints and recorded sounds were used for Warner Bros.’ 2004 film adaptation.
What type of locomotive is No. 1225?
It’s a 2-8-4 Berkshire, N-1 class, built by Lima Locomotive Works in October 1941 for the Pere Marquette Railway.
When did No. 1225 return to operating condition?
After restoration work beginning in 1969 through the MSU Railroad Club’s “Project 1225,” the locomotive moved under its own power again in 1985.
Where can you ride No. 1225 today?
No. 1225 is based in Owosso, Michigan, where the Steam Railroading Institute runs seasonal “North Pole Express” excursions aboard it each holiday season.