The Trans-Alaska Pipeline System is completed.

The Trans-Alaska Pipeline System was completed in 1977, and carried North Slope oil from Prudhoe Bay at the northern tip of Alaska to the Valdez Marine Terminal in Prince William Sound 800 miles to the south. The pipeline has been recognized as a landmark of engineering although the task was made slightly easier due to lessons learned from the building of the Davidson Ditch, Alaska’s first long-distance combination pipeline and ditch, built some 50 years earlier.

With the laying of the first section of pipe on March 27, 1975, construction began on what at the time was the largest private construction project in American history. More than 28,000 people worked directly on the pipeline at the peak of its construction in the Fall of 1975. Many workers from Fairbanks were hired at the local union halls making Fairbanks the major hiring location for the pipeline. Ft. Wainwright army base in Fairbanks housed workers employed on the project near the city.

Fairbanks was also the major hub for materials and pipe staged at the pipeline yard. The last weld was completed on May 31, 1977. Less than a month later, on June 20, 1977, oil from the North Slope’s Prudhoe Bay field began flowing to the port of Valdez at four miles an hour through the 48-inch-wide pipe. The oil arrived at the port 38 days later.

The completed Trans-Alaskan Pipeline system, including pumping stations, connecting pipelines, and the ice-free Valdez Marine Terminal ended up costing $8 billion and is still in production today.