The Alaska Highway, also "Alaskan Highway", "Alaska-Canadian Highway", "Al-Can Highway", runs from Dawson Creek, British Columbia to Fairbanks, Alaska, via Whitehorse, Yukon. It is 2,451 kilometres or 1,523 mile(s) long. The historic ending of the highway is near milepost 1422, where it meets the Richardson Highway in Delta Junction, Alaska, about 100 miles (160km) southeast of Fairbanks. Mileposts on the Richardson Highway are numbered from Valdez, Alaska.

The road was originally built as a supply route during World War II. Although it was completed on October 28, 1942 and its completion was celebrated on that November 21, the "highway" was not usable by general vehicles until 1943. It was opened to unrestricted traffic shortly after the end of the war in 1947.

The Milepost, an extensive guide book to the Alaska Highway and other highways in Alaska and Northwest Canada, was first published in 1949 and continues to be published annually as the foremost guide to travelling the highway.

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