Board approves $19.9 billion plan to overhaul Washington Dulles airport

Passengers make their way through the terminal as they travel ahead of the Thanksgiving holiday at Washington Dulles International Airport in Dulles, Virginia, on Nov. 22, 2023.Kevin Lamarque | ReutersThe board that oversees Washington Dulles airport voted on Wednesday to approve a $19.9 billion overhaul plan that includes $3.75 billion to build new underground tunnels and replace slow vehicles that transport passengers across the tarmac.The $6.2 billion reconstruction of the main terminal at the primary international airport serving the Washington D.C. region is set to begin in late 2027, the Metropolitan Washington Airports Authority said. Building new tunnels to get rid of the "People Mover" vehicles and extend to a new concourse would begin in early 2029 and is set to be completed by 2034.