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George Washington Bridge 1931

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  • New York, USA
  • Across Hudson river
  • Main span 1067m/3500ft
  • Truss deck and thick plate girder
  • 8 lane road bridge
  • Length 1450m/4760ft
  • Designed by Othmar Ammann
  • Built Between 1927 and 1931
  • Extended to 2 levels in 1962

DECK

  • 2 Decks over 30m / 100ft wide
  • 2 levels joined by a truss

TOWERS

  • Complex truss structure containing 20,000 tonnes of riveted steel

PIERS

  • West tower below water level constructed using cofferdams
  • East tower required excavation on dry land and concrete anchorage

CABLES

  • Four suspension cables
  • 107,000 miles / 172,000 km of wire