White Pass & Yukon Route No. 73

Design and Construction

No. 73 is a narrow gauge 2-8-2 “Mikado” built by the Baldwin Locomotive Works in May 1947, the last of four 70-class engines Baldwin built for the White Pass and Yukon Route and, notably, the very last narrow gauge steam locomotive Baldwin ever constructed before the company moved fully into diesel production. Crews nicknamed it the “Queen of the Fleet.” Built to burn coal, it was converted to oil firing during the 1950s, a switch that made sense for a railway that could ship fuel oil in by sea to Skagway more easily than coal.

Revenue Service (1947–1964)

No. 73 spent nearly two decades hauling both freight and passenger trains over the steep, twisting grades between Skagway, Alaska, and Whitehorse, Yukon, terrain that climbs from sea level to nearly 3,000 feet in barely 20 miles and includes some of the tightest curves and steepest sustained grades on any common-carrier railroad in North America. WP&YR retired No. 73 from revenue service on June 30, 1964, as the railway completed its shift to diesel power.

Static Display and Restoration (1968–1982)

The locomotive was placed on static display at Bennett, British Columbia, a former construction camp along the original gold-rush route, in 1968, before moving to Whitehorse in 1979 to begin restoration to operating condition. The work was completed in April 1982, and No. 73 made its return run on May 29 of that year, resuming excursion service on essentially the same line it had once worked as a revenue freight and passenger hauler.

Excursion Era and Recent Overhauls (1982–Present)

Since returning to steam, No. 73 has undergone several major overhauls, including a roughly $500,000 rebuild completed in 2004 and another finished in 2014. In 2017 it went out of service for its mandated Federal Railroad Administration 1,472-day inspection, a process that stretched to nearly two years at a Seattle shop rather than the shorter turnaround such inspections sometimes allow, before the locomotive returned to Skagway and resumed hauling excursion trains in July 2019.

Current Operations and Recognition

As the larger of WP&YR’s two operating steam locomotives, alongside sister engine No. 69, No. 73 remains a centerpiece of the railway’s summer excursion season along the historic gold-rush route through White Pass. The railroad itself was built during the Klondike Gold Rush, completed in just 27 months between 1898 and 1900 using little more than hand tools, black powder, and regional timber, and it climbs almost 2,900 feet from sea level at Skagway to the White Pass summit on the U.S.-Canada border in only 20 miles, one of the steepest standard railway climbs anywhere in the world. In 1994 the line was jointly designated an International Historic Civil Engineering Landmark by the American Society of Civil Engineers and its Canadian counterpart, an honor shared with fewer than forty other sites worldwide, including the Eiffel Tower and the Panama Canal. No. 73’s status as the last narrow gauge steam locomotive Baldwin ever built gives it a particular significance among railroad historians, marking the practical end of an entire manufacturing era, but it is also, more simply, one of the machines still doing daily work on a railway whose engineering is considered world-class in its own right.