Nearly 60 years and billions of dollars in the making, the Silver Line Extension opened Nov. 15, 2022, connecting customers to six new stations, including one at Washington Dulles International Airport (IAD). Parsons is proud to be a part of the facilities design team and civil engineer design team for the project. The new 11.4 miles of Metrorail track expanded the Washington Metropolitan Area Transit Authority (WMATA) system to provide service between Reston and eastern Loudoun County, both in Virginia. The project also includes a modern rail yard and maintenance facility (the area’s largest) that sits on 96 acres of airport property. Overall, it is one of the largest capital construction projects in the U.S.