After the attack on Pearl Harbor, the United States viewed Alaska as strategically vulnerable because no land route connected it with northwestern Canada. With Canadian consent, the U.S. War Department began a roughly 1,500-mile military highway from Dawson Creek, British Columbia, to Fairbanks, Alaska, to supply airfields and provide emergency access for troops and equipment. About 10,000 Army engineers, including Black and white troops, cut through forests, crossed swamps and mountains, and built culverts and temporary bridges; they opened the pioneer road in November 1942.
The film explains the severe cold, mud, ice, steep grades, equipment shortages, and unstable frozen ground that complicated construction and travel. Civilian contractors then widened, graded, drained, and surfaced the route while replacing temporary bridges, installing a telephone line, and establishing maintenance and fuel systems. Ports, railways, airfields, emergency landing strips, pipelines, and the Haines Cut-Off supported the highway and connected it with coastal shipping and the wider wartime transportation network.
Crews closed the final gap near the Alaska-Yukon border in October 1943 after 20 months of work by 25,000 men. The completed all-weather road linked southern Canada with interior Alaska and also helped service aircraft being sent to the Soviet Union under Lend-Lease. The closing message celebrates the highway as both the backbone of the United States military position in the far northwest and a route that opened Alaska and northwestern Canada to further development.
