West Dock Causeway, Prudhoe Bay

West Dock Causeway was constructed in the Beaufort Sea between Gwydyr Bay to the west and Prudhoe Bay to the east in support of oil exploration and to access a seawater treatment facility 2.5 miles (4.3 km) north from the mainland, about 59 miles (95 km) northeast of Nuiqsut and 15 miles (24 km) north of Deadhorse, Alaska.