Latitudinal and longitudinal I-beams supported by the bottom chords provide a deck frame.
Iron Maiden | Iron Age | bridge | Iron Curtain | Iron Man | iron | Golden Gate Bridge | Brooklyn Bridge | Iron Chef | Contract bridge | Sydney Harbour Bridge | London Bridge | Iron Cross | Tower Bridge | Iron Chef America | Knight's Cross of the Iron Cross | Iron Butterfly | Eads Bridge | Iron | The Appleseed Cast | Forth Bridge | Auckland Harbour Bridge | Waterloo Bridge | Stamford Bridge | Westminster Bridge | cast iron | World Bridge Federation | The Bridge on the River Kwai | Pegasus Bridge | Manhattan Bridge |