Keywords: Bascule span design - Arlington Memorial Bridge - 2013.jpg en Schematic design of the 1932 bascule span of the Arlington Memorial Bridge over the Potomac River in Washington D C in the United States http //parkplanning nps gov/showFile cfm projectID 37120 MIMEType application 252Fpdf filename Final 5FPublic 5FScoping 5FMeeting 5FBoards 5F40x28 5F03292013minimized1 2Epdf sfid 0 Public Meeting Arlington Memorial Bridge Environmental Assessment George Washington Memorial Parkway Washington D C and Virginia National Park Service U S Department of the Interior April 23 2013 p 8 2013-04-23 Arlington Memorial Bridge Bascule bridges PD-USGov |