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Tower Bridge

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Tower Bridge


Structure in General

existing [completed]
no heating


  • The bridge's framework is constructed from over 11,000 tons of steel which is clad in both Portland stone and Cornish granite.
  • Over 430 labourers were employed in the bridge's construction.
  • The bridge has twin walkways enclosed in glass which provide fine views of the city.
  • When completed the bridge was the largest bascule bridge yet built.
  • The bascules are raised to allow tall ships to pass through, an event which happens around 900 times per year.
  • The bascules were originally steam-powered until 1976 when an electric system was installed.
  • On April 5th 1968, a disgruntled Royal Air Force pilot flew a Hawker Hunter jet fighter in between the bridge's top span and main deck.
  • The ironwork's current red white and blue colour scheme was adopted in 1977 to celebrate Queen Elizabeth II's Silver Jubilee.
  • The bridge's deck can be raised to 87 degrees from the horizontal.
  • Tower Bridge is the world's most famous bascule bridge, is one of the world's most famous and recognisable bridges and is one of London's most famous icons.
  • Work commenced in April 1886, the foundation stone being laid on behalf of Queen Victoria by the Prince of Wales, the later King Edward VII.
  • Construction costs at the time were around £1m.
  • The complete length of the bridge, including the approaches is around half a mile.
  • The width of the roadway is 10.6 metres (35 feet) and is bordered on each side by footways, each of which is 3.8 metres (12.5 feet).
  • Measured from the level of the foundations, the total height of the towers is 89.3 metres (293 feet).
  • The bridge was designed to blend harmoniously with the nearby The White Tower.
  • Tower Bridge is Grade I Listed.
  • The original hydraulic machinery was supplied by Sir W. G. Armstrong, Mitchell and Co., Ltd.
  • A total of 8 building contractors worked on the bridge.

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More Information


Tower Bridge
Tower Bridge
Tower Hamlets
United Kingdom

Technical Data

213.25 ft

Involved Companies

Sir Horace Jones

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Features & Amenities

  • One of the city's famous buildings
  • City landmark
  • National landmark
  • Floodlighting at night
  • Observation floor is available
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