#3 - Campman Bridge at Slims River, 1565 miles from the beginning of the Alaska Highway.
Approved by Northwest Service Command, U.S. Army.
NFB photo.

The highway has been substantially shortened over the years by re-routing sections of it. The current Slims River Bridge is only 1023.6 miles (1647.4 kilometers) from the beginning of the highway (Mile 0 is at Dawson Creek, British Columbia).