Dulles International Airport station costs. On April 6, 2011, the Metropolitan Washington Airports Authority (MWAA) board voted 9 to 4 to build an underground station 550 feet away from the terminal, rather than an above-ground station 1,150 feet away from the terminal, at an additional cost of $330 million. Construction of the underground station would have extended its expected opening to mid-2017. However, on July 20, 2011, the MWAA board reversed its previous vote and approved an above-ground station due to pressure from state and local officials to reduce overall project costs. Dulles International Airport station Dulles International Airport is a planned Washington Metro
Washington Dulles International Airport mezzanine with more room for lines. A new train system, dubbed AeroTrain and developed by Mitsubishi, began in 2010 to transport passengers between the concourses and the main terminal. The system, which uses rubber tires and travels along a fixed underground guideway, is similar to the people mover systems at Singapore Changi Airport, Hartsfield–Jackson Atlanta International Airport, and Denver International Airport. The train is intended to replace the mobile lounges, which many passengers found crowded and inconvenient. The initial phase includes the main terminal station, a permanent Concourse A station, a permanent Concourse B station, a permanent midfield concourse station