Cumbres & Toltec Scenic No. 484

Design and Construction

No. 484 is one of ten K-36 class 2-8-2 “Mikado” type locomotives Baldwin Locomotive Works built for the Denver and Rio Grande Western Railroad in 1925, numbered 480 through 489. The K-36s answered a problem Rio Grande had lived with since the 1880s: its narrow gauge lines through the San Juan Mountains needed more freight capacity than the older, smaller K-27 and K-28 classes could deliver, but the tight curves and light rail of a 3-foot gauge network ruled out anything built to standard gauge proportions. Baldwin’s solution kept the narrow track spacing while enlarging the boiler, firebox, and drivers as far as the loading gauge allowed, producing a locomotive rated at 36,200 pounds of tractive effort, the figure that gave the class its name. No. 484 and its nine sisters became the heaviest and most powerful narrow gauge locomotives Rio Grande ever rostered. Not all ten survived their working careers: No. 485 was lost in 1955 when it fell into the turntable pit at Salida, Colorado, leaving nine sisters, including No. 484, to carry on the class’s story. Today five of those, Nos. 483, 484, 487, 488, and 489, remain preserved and operable on the Cumbres and Toltec Scenic Railroad.

Revenue Service (1925–1968)

No. 484 spent its Rio Grande career on the railroad’s Colorado narrow gauge network, working the Monarch Branch’s limestone-hauling assignments out of Salida and the grades of Marshall Pass between Salida and Gunnison until those routes were cut back in the mid-1950s. It was then reassigned to the railroad’s Third Division out of Alamosa, hauling freight over Cumbres Pass between Alamosa, Antonito, and Chama, and on toward Durango. Rio Grande’s narrow gauge freight business shrank steadily through the 1950s and 1960s as trucking absorbed the local traffic the line had once carried, and by the late 1960s the San Juan Extension survived on little more than a dwindling stream of oil-drilling pipe and stock trains.

Transfer to the Cumbres and Toltec Scenic Railroad (1970–1971)

Rather than let the last of its narrow gauge network go to scrap, Rio Grande found a buyer in the states of Colorado and New Mexico, which jointly purchased the 64-mile Antonito-to-Chama segment of the line in 1970 and formed the Cumbres and Toltec Scenic Railroad to operate it as a heritage tourist line. No. 484 was among the locomotives that came with the property. It was restored to operating condition in 1971 to help launch the new railroad’s excursion service, hauling passenger trains over the same 10,015-foot summit at Cumbres Pass and through the same Toltec Gorge it had worked as a freight engine only a few years before.

Excursion Era and Current Operations (1971–Present)

No. 484 has remained part of the C&TS’s working roster for more than five decades since that first restoration, cycling through the periodic boiler inspections and shop overhauls that keep any coal-fired steam locomotive legal for FRA-regulated passenger service. Several of its K-36 sisters have since been converted to burn oil, in part to reduce the wildfire risk that hot cinders pose along a right-of-way that runs through dry, high-altitude forest, but No. 484 is one of only two K-36s on the roster, alongside sister engine No. 488, still fired with coal. That distinction matters to railfans and to the railroad’s own interpretation of its history: a coal-fired K-36 reproduces the sound, smoke, and smell of the original Rio Grande operation in a way an oil burner cannot. In 2025, the railroad marked the hundredth anniversary of the K-36 class’s construction with a centennial celebration built around its surviving engines, No. 484 prominent among them.

Recognition

The Cumbres and Toltec Scenic Railroad, formally designated the Denver and Rio Grande Western Railroad San Juan Extension, was named a National Historic Landmark on October 16, 2012, one of the relatively few American railroads to hold that designation as a complete operating system, roadbed, structures, and rolling stock together, rather than as a collection of individually preserved artifacts. No. 484’s continued service in regular coal-fired excursion power is part of what keeps that designation more than symbolic: the railroad is not simply preserving a right-of-way and a depot, it is still running the same locomotive that helped make the line historically significant as a working narrow gauge freight hauler in the first place. Between Cumbres Pass and the Toltec Gorge, passengers riding behind No. 484 today are, in a real sense, riding behind an original piece of Rio Grande’s mountain railroading rather than a replica of it.