Transportation authorities plan to sign an agreement Tuesday that will clear the way for remaining work on the first phase of the Dulles Metrorail project.
The agreement between the U.S. Department of Transportation and the Metropolitan Washington Airports Authority will award the project $900 million in federal funds.
The first phase of the 23-mile rail extension, known as the Silver Line, will run from Falls Church, through Tysons Corner to Reston.
The second phase will run from Reston to Dulles and Loudoun County.
Former U.S. Transportation Secretary Mary Peters gave final federal approval for the $5.2 billion project in January.
Copyright AP - Associated Press
