Tunnel Construction: Digging a Hole in Tyson's Corner
Construction begins at Route 123 and International Drive in Tyson's Corner as workers use special tunneling methods to build the future Metro line. This is all happening while commuters continue to navigate the roads above.
18 Feet Done, Many More to Go Article | Cars crawl down Route 123 in the afternoon rush. Forty feet below them, giant machines and men wearing yellow hard hats begin their advance under Tysons Corner to bring Northern Virginia commuters their holy grail: a new subway.