"U.S. Route 1" . "US 1" . . . . . . "DC" . . . . . . "North" . . . . "U.S. Route 1 in the District of Columbia" . . . . "South" . "1" . "U.S. Route 1 in the District of Columbia" . "US" . "U.S. 1" . "US 1" . . "U.S. Route 1" . . "11265.408" . . "1" .