Gulkana River: The decision to abandon the buried concept because of construction difficulties was made last October, and the pipeline builders were given the challenge to design, construct and complete a bridge crossing before may, 1976 (after which date, river construction activity could damage fish habitat)., 1976-05, PCA0002-1b-11, 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/17349 Accessed February 22, 2025.