where does the alaskan highway begin?

Answer 1

Officially Prince George BC...

However, some route consideration was given. The preferred route would pass through the Rocky Mountain trench from Prince George, British Columbia to Dawson City before turning west to Fairbanks, Alaska.

The needs of war dictated the final route, intended to link the airfields of the Northwest Staging Route that conveyed lend-lease aircraft from the United States to the Soviet Union. Thus, the rather impractical, long route over extremely difficult terrain was chosen.

The road was originally built mostly by the US Army as a supply route during World War II. There were four main thrusts in building the route: southeast from Delta Junction, Alaska toward a linkup at Beaver Creek, Yukon; north then west from Dawson Creek (an advance group started from Fort Nelson, British Columbia after travelling on winter roads on frozen marshland); both east and west from Whitehorse after being ferried in via the White Pass and Yukon Route railway. The Army commandeered equipment of all kinds, including local riverboats, railway locomotives, and housing originally meant for use in southern California. The eastern linkup occurred at historic Mile 588, known today as Contact Creek.