of Transportation on July 29 selected a proposal that would nearly triple the investment in the Metropolitan Washington Airports Authority's modernization of Washington Dulles International Airport. It includes more than 5 million sq ft of new or renovated terminal, concourse and passenger-processing facilities. President Donald Trump announces the selection of a proposal to expand Washington Dulles International Airport during a July 29 Oval Office event. A rendering shows the interior of Concourse E, the 435,000-sq-ft, 14-gate facility now under construction at Washington Dulles International Airport and scheduled to open later this year with direct AeroTrain access. RELATEDHOK to Design Dulles Airport ExpansionEnvironmental approvals also remain on the project's critical path.