Filed under: DC Metro WMATA Silver Line Delay By Michelle Goldchain@goldchainam Apr 30, 2015, 4:08pm EDT The second phase of Metro's Silver Line has been delayed by at least 13 months. At the earliest, the project to Dulles Airport won't open until 2019. The rail extension will cost $2.7 billion. [WAMU] [Photo via Sam Howells]