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Tower Bridge

Tower Bridge
Tower Bridge London Feb 2006.jpg
Carries A100 Tower Bridge Road
Crosses River Thames
Locale London boroughs:
– north side: Tower Hamlets
– south side: Southwark
Maintained by Bridge House Estates
Heritage status Grade I listed structure
Preceded by London Bridge
Followed by Queen Elizabeth II Bridge
Characteristics
Design Bascule bridge / Suspension Bridge
Total length 801 feet (244 m)
Height 213 feet (65 m)
Longest span 270 feet (82.3 m)
Clearance below 8.6 metres (28 ft) (closed)
42.5 metres (139 ft) (open)
(mean high water spring tide)
History
Opened 30 June 1894; 122 years ago (1894-06-30)

Coordinates: 51°30′20″N 0°04′32″W / 51.50556°N 0.07556°W / 51.50556; -0.07556

Tower Bridge is a combined bascule and suspension bridge in London built in 1886–1894. The bridge crosses the River Thames close to the Tower of London and has become an iconic symbol of London. Tower Bridge is one of five London bridges now owned and maintained by the Bridge House Estates, a charitable trust overseen by the City of London Corporation. It is the only one of the Trust's bridges not to connect the City of London directly to the Southwark bank, as its northern landfall is in Tower Hamlets.

The bridge consists of two bridge towers tied together at the upper level by two horizontal walkways, designed to withstand the horizontal tension forces exerted by the suspended sections of the bridge on the landward sides of the towers. The vertical components of the forces in the suspended sections and the vertical reactions of the two walkways are carried by the two robust towers. The bascule pivots and operating machinery are housed in the base of each tower. The bridge's present colour scheme dates from 1977, when it was painted red, white and blue for Queen Elizabeth II's Silver Jubilee.


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