What is the name of the 1,287-kilometre pipeline that carries crude oil across Alaska?

The 1,287-kilometre pipeline carrying crude oil across Alaska is the Trans-Alaska Pipeline System.

The system, commonly abbreviated TAPS, transports crude oil from the Prudhoe Bay oil field on Alaska's North Slope to the marine terminal at Valdez. Construction began in 1974, and the pipeline was completed in 1977 after the 1973 oil crisis increased pressure to develop the route.

TAPS crosses difficult terrain, including mountains, earthquake zones, rivers, and permanently frozen ground. Much of the line is elevated on vertical support members so heat from the oil does not melt the permafrost beneath it. Special zigzag sections allow the pipe to move as temperatures change or the ground shifts.

The system is a crude-oil pipeline, not a natural-gas pipeline. Its throughput has declined from early peak levels as North Slope production fell, but it remains a major piece of Alaska's infrastructure and a key route for transporting the state's oil to market.