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First Bosphorus Bridge 1973

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  • Istanbul, Turkey
  • Across The Bosphorus Strait
  • Main span 1074m/3523ft
  • Suspension bridge
  • 6 lane highway
  • Total length 1560m/5118ft
  • Linking Europe and Asia
  • World's fourth longest span bridge at the time
  • Dr William Brown was the partner responsible for design at Freeman Fox & Partners and was onsite to direct construction

PIERS

  • Both towers were founded on land with short approach viaducts

TOWERS

  • Designed to suit local erection capabilities with clean internal connectors

CABLE

  • The total length of wire was 40,000km – enough to wrap around the world

DECK

  • Severn-type aerodynamic box girder