Metro Center station is the central hub station of the Washington Metro rapid transit system in Washington, D.C. The station is located in Downtown Washington, D.C., centered on the intersection of 12th Street NW and G Street NW. It is the second busiest station in the Metrorail system after Union Station, averaging 30,500 passengers per weekday as of May 2006. The Red Line portion of Metro Center station opened on March 27, 1976, as part of the first section of the Metro system.