The Washington Metropolitan Area Transit Authority (WMATA), Fairfax County, Loudoun County, Town of Herndon and the Metropolitan Washington Airports Authority (MWAA) are partners in this 23-mile transit extension in the rapidly growing Dulles Corridor in Fairfax and Loudoun Counties, Virginia. [google map here]

Learn more about major construction projects at our airports and along the Dulles Corridor: Washington Dulles International Airport Ronald Reagan Washington National Airport Dulles Corridor Metroail Project Learn about the requirements for construction and submit requests inspections or utility outages:

In October of 2011, the Metropolitan Washington Airports Authority Board of Directors commissioned an independent audit to assess the administrative procedures that the Airports Authority was using in the oversight of Phase 1 of the Dulles Corridor Metrorail Project, and to recommend any opportunities for improvement in managing the Project. KPMG, a nationally recognized accounting firm, recently completed the audit which found that “current processes and controls overall are working as intended to allow for effective management of the Project.”

On December 29, 2006, The Metropolitan Washington Airports Authority signed the first of several agreements with the Virginia Department of Transportation (VDOT), which will be required for the Dulles Metrorail Project to be financed and built by the Airports Authority. The major business terms of the agreement between the Airports Authority and VDOT are outlined below: Term

Click below to download documents submitted to the Federal Transit Administration on February 1, 2008:

By resolution approved on June 6, 2007, The Metropolitan Washington Airports Authority Board of Directors authorized the Airports Authority to enter into a contract to construct Phase I of the Dulles Corridor Metrorail project. On July 23, 2008, The Metropolitan Washington Airports Authority Board of Directors approved a resolution authorizing the Airports Authority to update the previously approved contract.

New permanent airline gates were constructed in the lower level of the Main Terminal to replace the temporary T-gates. The first completed phase of the Z-gates is located to the east of the airport’s original Airport Traffic Control Tower. The building features gates furnished with counters, holdrooms, restrooms, concessions, airline operations offices and other terminal services.

Runway 12-30 was built in 1960 and opened along with the Airport in 1962.  Additions to the original runway included a 500-foot extension in 1992 and new asphalt shoulders in 1998.  Due to its age and use, the original runway pavement needed to be replaced.  Also, additional drainage features and strength improvements were needed to accommodate aircraft much heavier than those estimated in the origina

Roadway Improvements

This walkway provides passengers with an alternative path between the Main Terminal and Concourses A and B.  It is equipped with moving sidewalks in each direction.  The walkway crosses underneath a set of airplane taxiways and has escalators and elevators at each end.  The present-day Mobile Lounges and future 

This project provided two five-level parking garages close to the Terminal for daily parking.  These are the first garages constructed at the Airport.  Previously, daily parking existed in the surface lot in front of the airport along with hourly parking.  That lot has been converted to hourly parking and valet.

In response to continuing growth in international air service at Washington Dulles International Airport, the Metropolitan Washington Airports Authority opened the International Arrivals Building (IAB) in 1991, when Dulles was serving approximately 1.4 million international passengers a year.

A Future Runway 12R-30L at Dulles

A new Runway 1L-19R for Dulles

A new, updated look for a temporary facility

The first phase to expand Concourse B added four airline gates to the west end of the building and was completed in April 2003. The addition is approximately 440 feet long and provides approximately 131,000 square feet of functional space. The final phase of the expansion of Concourse B completes the build-out of the facility to the west, providing 15 additional aircraft gates attached to a two-level concourse building.

The original Airport Traffic Control Tower (ATCT) at Dulles opened along with the Airport in 1962.  Since then, there has been tremendous growth in the number of flights and airline gates.  As new runways are built, a taller, more centrally positioned tower provides views all around the Airport for the safe guidance of aircraft.  The facilities inside the new tower were planned with present and future needs in mind.