South Fork Koyukuk: The majority of the bridge crossings are a standard design plate and girder bridge. The bridge crossing the south fork of the Koyukuk--100 miles north of the Yukon River-- is under construction in the foreground here. The bridge for the pipeline haul road is behind., 1976-05, PCA0002-1b-7, Folder: PCA0002-1b. Alyeska Pipeline Service Company : Trans-Alaska Pipeline Construction Collection, 1976-1977, PCA 2. Alaska State Library - Historical Collections Finding Aids. https://alaska.libraryhost.com/repositories/2/archival_objects/17345 Accessed February 22, 2025.