Santa Fe No. 3751
Overview
Santa Fe No. 3751 is a preserved 4-8-4 steam locomotive built by the Baldwin Locomotive Works in May 1927 (builder’s number 60004) for the Atchison, Topeka & Santa Fe Railway.
When completed, 3751 became the first of the fourteen members of Santa Fe’s 3751 class and the railroad’s first 4-8-4 type locomotive. The design helped establish the modern high-speed passenger steam locomotive and served as a foundation for later Santa Fe Northern-type locomotives.
After more than twenty-five years of regular service, the locomotive made its last revenue run on August 23, 1953, and was donated to the City of San Bernardino on May 14, 1958. Following decades of static display, 3751 returned to operation in 1991 and became a widely recognized restored steam locomotive. It is the oldest surviving 4-8-4 in the world and has been listed on the National Register of Historic Places since 2000.
Today, ATSF 3751 remains a well-known example of Southern California railroad preservation and continues to represent the sights, sounds, and mechanical complexity of mainline steam.
Quick Facts
| Railroad | Atchison, Topeka & Santa Fe Railway |
| Number | 3751 |
| Wheel Arrangement | 4-8-4 |
| Builder | Baldwin Locomotive Works |
| Builder Number | 60004 |
| Built | May 1927 |
| Class | 3751 class (first of 14) |
| Fuel | Coal; converted to oil in 1936 |
| Retired | August 23, 1953 |
| Donated to San Bernardino | May 14, 1958 |
| Returned to Operation | 1991 |
| Current Caretaker | San Bernardino Railroad Historical Society |
| Status | Operationally preserved |
| National Register of Historic Places | Listed 2000 |
| Storage | Los Angeles area; Amtrak 10th Street Yard / Redondo Junction facilities |
| Public Display | Not regularly open to the public |
Santa Fe’s First Northern
During the 1920s, Santa Fe sought a locomotive capable of hauling increasingly heavy passenger trains at higher speeds across the railroad’s growing network.
The result was No. 3751.
Built in 1927 by Baldwin, the locomotive introduced the 4-8-4 wheel arrangement to Santa Fe’s roster and became the prototype for an entire class of locomotives. The design represented a major step forward in steam-locomotive development, combining speed, power, and stability in a package suited to mainline passenger service.
The success of 3751 helped validate the 4-8-4 arrangement, which later became widely used in North America.
Mainline Service
During its operating career, 3751 worked Santa Fe passenger trains. On August 23, 1953, it pulled the last regularly scheduled Santa Fe steam passenger train between Los Angeles and San Diego.
The locomotive worked during the height of American passenger rail travel, carrying travelers across deserts, mountains, and major cities long before Amtrak or modern airline competition.
Like many steam locomotives, 3751 underwent modifications during its career. Built as a coal burner, it was converted to burn oil at Santa Fe’s San Bernardino shops in 1936. Improvements in boiler technology, appliances, and operating practices helped extend its usefulness even as newer locomotive designs entered service.
For more than two decades, 3751 served as part of a railroad known for speed, reliability, and premium passenger transportation.
Retirement and Preservation
Santa Fe withdrew 3751 from revenue service in 1953 as diesel locomotives replaced steam across the railroad.
Unlike many steam locomotives that were scrapped, 3751 received an unusual second chance. In 1958, the locomotive was donated to the City of San Bernardino and placed on public display in Viaduct Park.
Although display saved it from the scrapper’s torch, decades outdoors exposed the locomotive to weather and deterioration. Enough remained intact, however, for preservationists to believe that a full operational restoration might be possible.
Return to Steam
In the 1980s, a dedicated group of volunteers launched an ambitious effort to return the locomotive to operation.
The restoration required years of work, fundraising, mechanical rebuilding, and regulatory compliance. In 1991, ATSF 3751 returned to service.
Its restoration was a major steam-preservation achievement and helped reintroduce mainline steam excursions to Southern California.
A Preservation Story Longer Than Its Service Career
For many locomotives, preservation is the final chapter of the story. For ATSF 3751, preservation has become an equally important chapter.
The locomotive spent approximately twenty-six years in Santa Fe service between 1927 and 1953. Since returning to operation in 1991, however, 3751 has spent more than three decades as an operationally preserved locomotive, ambassador for railroad history, and centerpiece of Southern California’s steam-preservation movement.
As a result, 3751 is historically significant not only because of what it accomplished during the steam era, but also because of what it has accomplished in preservation. Several generations of Southern California railfans have known the locomotive primarily as a preserved excursion engine rather than as a Santa Fe revenue locomotive.
For ATSF 3751, preservation history has become as important as the original operating career.
Steam in the Modern Era
Today, 3751 serves a role very different from its original one.
Rather than pulling scheduled passenger trains, the locomotive has operated special excursions and appeared at public exhibitions, anniversary events, educational programs, and railroad celebrations.
These appearances allow new generations to experience a working steam locomotive rather than encountering steam only through photographs, film, or static displays. The locomotive has become an ambassador for railroad preservation throughout the American West.
Why 3751 Matters
Many preserved steam locomotives are historically important. 3751 is significant in several different areas.
The locomotive is important because it was Santa Fe’s first 4-8-4, the prototype for an influential locomotive class, a survivor of the dieselization era, a major California steam restoration, and a pioneer of modern mainline steam excursions.
It is also a preserved locomotive whose active preservation era now exceeds its original Santa Fe service career.
Its continued operation demonstrates that railroad preservation is about more than static display. A working steam locomotive allows visitors to experience the sights, sounds, smells, and mechanical complexity of railroading in a way that no conventional exhibit can fully reproduce.
Current Storage and Visibility
ATSF 3751 remains operational under the care of the San Bernardino Railroad Historical Society.
When not operating excursions or attending public events, the locomotive is stored in the Los Angeles area at facilities associated with Amtrak’s 10th Street Yard and the Redondo Junction warehouse complex.
Unlike a locomotive displayed in a public park or museum, 3751 is not normally available for regular public viewing. Rail passengers may nevertheless catch glimpses of it from passing trains on the LOSSAN Corridor when it is positioned outside the storage facilities near Redondo Junction.
This storage arrangement reflects the locomotive’s unusual status. Rather than serving as a static museum artifact, 3751 is maintained for future operation and requires secure railroad facilities capable of supporting a large mainline steam locomotive.
Preservation Status
ATSF 3751 remains an operationally preserved locomotive maintained by the San Bernardino Railroad Historical Society. It continues to represent Santa Fe passenger service, Southern California railroad history, and the accomplishments of the modern steam-preservation movement.
More than a century after its construction, 3751 continues to fulfill the purpose for which it was built: moving trains and inspiring people.
Related Railroads
Related Museums
- San Bernardino Railroad Historical Society
Related Locations
- Cajon Pass
- Fullerton
- Los Angeles Union Station
- Redondo Junction
- San Bernardino
Related Topics
- Baldwin Locomotive Works
- Steam Locomotive
- LOSSAN Corridor
- ATSF 2926
- Union Pacific 4014
- Southern Pacific 4449
Gallery
Western Rail Archive Notes
For Southern California railfans, ATSF 3751 is more than a locomotive. It is a bridge between the steam era and modern railroad preservation. Its preservation career has now outlasted its original Santa Fe service life, giving the locomotive historical significance in two distinct eras: first as a working Santa Fe passenger locomotive, and later as one of the cornerstones of mainline steam preservation in the American West.
Archive Status
| Page Status | Category | Type | Gallery |
|---|---|---|---|
| Foundational Article | Equipment | Locomotive | In Development |