Francis Scott Key Bridge, Baltimore

The Francis Scott Key Bridge, also known as the Outer Harbor Bridge, is a continuous truss bridge spanning the Patapsco River in Maryland, USA. The bridge was opened in March 1977 and is named for the author of the Star Spangled Banner, Francis Scott Key. The bridge is the outermost of three toll crossings of Baltimore’s Harbor. Upon completion, the bridge structure and its approaches became the final links in Interstate 695, also known as the Baltimore Beltway.

More info at  http://en.wikipedia.org/wiki/Francis_Scott_Key_Bridge_%28Baltimore%29