:''This article is a text about the '''Bridge in London'''. For other meanings, see London_Bridge_(disambiguation); for the nearby overground and underground Railway_station, see London_Bridge_station''.
Image:London_bridge.jpg
'''London Bridge''' is a Bridge over the River_Thames, between the City_of_London and Southwark. It is between Cannon_Street_Railway_Bridge and Tower_Bridge; it also forms the western end of the Pool_of_London. London's original bridge made this one of the most famous bridge emplacements in the world. It was the only bridge over the Thames in London until Westminster_Bridge was opened in 1750.
On the south side of the bridge is Southwark_Cathedral and London_Bridge_station. On the north side is the Monument_to_the_Great_Fire_of_London and Monument tube station.
The bridge is designated as part of the A3_road, maintained by the Greater_London_Authority. http://www.hmso.gov.uk/si/si2000/20001117.htm
== History ==
A bridge has existed at or near the present site for nearly 2000 years. The first bridge across the Thames in the London area was built by the Romans on the present site around AD 46 and was made of wood. The location was most likely chosen as a bridgeable spot which still had deepwater access to the sea. The bridge fell into disrepair after the Romans left, but at some point either it was repaired or a new timber replacement constructed, probably more than once. In 1014, the bridge was burned down by King Ethelred in a bid to divide the invading forces of the Dane Svein_Haraldsson. This episode reputedly inspired the well-known Nursery_rhyme ''London_Bridge_is_falling_down''. The rebuilt London Bridge was destroyed by a storm in 1091 and yet again, this time by fire, in 1136.
=== Old London Bridge ===
Image:London_bridge_1745.jpg]]
Following the 1136 destruction of London bridge, its maintainer Peter_de_Colechurch proposed to replace the timber bridge with a permanent stone construction. A tax was levied to fund the new stone bridge, and construction of a new stone bridge was begun in the reign of Henry II, under de Colechurch's direction, in 1176. The new bridge took 33 years to complete and was not finished until 1209, four years after de Colechurch died, in the reign of King John.
John had the idea to build houses on the bridge, and it was soon colonised by houses, shops and even a chapel built at the centre of the bridge (dedicated to the recently martyred and canonised Thomas_a_Becket, who, appropriately had been born in the parish of St_Mary_Colechurch). Contemporary pictures show it crowded with buildings of up to seven stories in height. The population of the bridge was such that it was made a ward of the City with its own Alderman, which it retained until the 18th_century.
The mediaeval bridge had 19 small arches and a Drawbridge with a gatehouse at each end. The narrowness of the arches meant that it acted as a partial barrage over the Thames, blocking an estimated 80% of the river flow. The current was further obstructed by the addition of water-wheels under the two north arches to drive water pumps, and under the two south arches to power grain mills. This produced ferocious rapids between the piers or "starlings" of the bridge, as the difference between the water levels on each side could be as much as six feet (two metres). Only the brave or foolhardy attempted to "shoot the bridge" – steer a boat between the starlings – and many were drowned trying to do so. As the saying went, the bridge was "for wise men to pass over, and for fools to pass under".
Various arches of the bridge collapsed at various points, and houses on the bridge were burnt during Wat_Tyler's Peasants'_Revolt in 1381 and Jack_Cade's rebellion in 1450.
Image:london_bridge_alcove.jpg, Tower_Hamlets since 1860.]]
The northern gate, the New Stone Gate, was replaced by Nonesuch_House in 1577. The southern gatehouse, the Stone Gateway, became the scene of one of London's most notorious sights: a display of the severed heads of traitors, impaled on pikes and dipped in tar to preserve them against the elements. The head of William_Wallace was the first to appear on the gate, in 1305, starting a tradition that was to continue for another 355 years. Other famous heads on pikes included those of Jack_Cade in 1450; Sir Thomas_More in 1535; Bishop John_Fisher, also in 1535; and Thomas_Cromwell in 1540. A German visitor to London in 1598 counted over thirty heads on the bridge. The practice was finally stopped in 1660, following the Restoration of King Charles II.
The buildings on London Bridge created a major fire hazard and served to increase the load on its arches, so it is not surprising that there were several disasters on the bridge. In 1212 or 1213, a major fire broke out on both ends of the bridge simultaneously, trapping many in the middle and reportedly resulting in 3,000 people being killed. Another major fire broke out in 1633 with the northern third of the bridge being destroyed, although this prevented the bridge from being damaged by the Great_Fire_of_London in 1666. By 1722, congestion was becoming so serious that the Lord Mayor decreed that "All carts, coaches and other carriages coming out of Southwark into this City do keep all along the west side of the said bridge: and all carts and coaches going out of the City do keep along the east side of the said bridge". This is possibly the origin of traffic in Britain driving on the left. Finally, in 1758–62, the houses were removed along with the two centre arches, replaced with a single wider span to improve navigation on the river.
===New London Bridge===
Image:OldLondonBridge.JPG]]
By the start of the 19th_century, it was apparent that the old London Bridge — by now over 600 years old — needed to be replaced. It was narrow, decrepit and a hazard to river traffic. In 1799, a competition for designs to replace the old bridge was held, prompting the engineer Thomas_Telford to propose a bridge with a single iron arch spanning 600 ft (180 m). The revolutionary nature of this design won praise but it was never used, due to uncertainty about its feasibility and the amount of land needed for its construction.
The bridge was eventually replaced by an elegant structure of five stone arches, designed by engineer John Rennie. The new bridge was built 100 feet (30 m) west (upstream) of the original site at a cost of £2,000,000 and was completed by Rennie's son (of the same name, confusingly) over a seven-year period from 1824 to 1831. The old bridge continued in use as the new bridge was being built, and was demolished after the new bridge opened in 1831.
Rennie's bridge was constructed from Dartmoor Granite, with a length of 928 feet (283 m) and a width of 49 feet (15 m). The official opening took place on August_1, 1831; King William IV and Queen Adelaide attended a banquet in a pavilion erected on the bridge. The recently constructed HMS_Beagle was the first ship to pass under it. It was widened in 1902–4 from 52 to 65 feet (16 to 20 m) in an attempt to combat London's chronic traffic congestion. Unfortunately, this proved too much for the bridge's foundations; it was subsequently discovered that the bridge was sinking an Inch every eight years. By 1924, the east side of the bridge was some three to four inches lower than the west side.
Image:London_Bridge_Lake_Havasu.jpg]]
On April_18 1968, Rennie's bridge was sold to the American entrepreneur Robert P. McCulloch of McCulloch Oil for the sum of $2,460,000 (it has been claimed that he was under the mistaken belief that he was buying Tower_Bridge, though McCulloch himself strongly denied this). The bridge was reconstructed at Lake_Havasu_City,_Arizona, and dedicated on October_10, 1971. Not all of the bridge was transported to America, as some was kept behind in lieu of tax duties. The version of London Bridge that was rebuilt at Lake Havasu consists of a concrete frame with stones from the old London Bridge used as cladding. The remaining stone was left at Merrivale Quarry on Dartmoor in Devon, so a large part of Rennie's bridge never left the UK. When Merrivale Quarry was abandoned and flooded in 2003, the remaining stones were auctioned off. The reconstruction of Rennie's London Bridge spans a canal that leads from Lake Havasu to Thomson Bay, and forms the centrepiece of an ersatz English theme park complete with mock-Tudor Shopping_mall. Rennie's London Bridge has become Arizona's second biggest tourist attraction after the Grand_Canyon.
===Modern London Bridge===
The current London Bridge was constructed by contractors John_Mowlem from 1967 to 1972, and opened by Queen Elizabeth II on March_17, 1973. It is a fairly dull edifice comprising three spans of pre-stressed concrete cantilevers, paid for in part by the sale of the earlier Rennie bridge. It is 928 feet (283 metres) long. The cost of £4m was met entirely by the City of London's Bridge_House_Estates. The current bridge was built in the same location as Rennie's bridge, which was carefully demolished piece by piece as the new bridge was built, so the bridge would remain in use throughout.
In 1984 the British warship HMS Jupiter collided with London Bridge causing significant damage to both ship and bridge.
On Remembrance_Day 2004, various London bridges were furnished with red lighting as part of a night-time flight along the river by wartime aircraft. The red lighting on London Bridge considerably improved its drab appearance, so it has been left on the bridge (but not the other bridges) and lights it at night.
==External links==
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*Southwark Council page with more info about the bridge
*Lyrics to the song 'London Bridge is falling down'
*Virtual reality tour of Old London Bridge
{{ThamesCrossings | west=Cannon Street
Railway Bridge | east=Northern_Line tunnel
between Monument
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Railway Bridge | east=Northern_Line tunnel
between Monument
and London Bridge }} {{Bridges_of_Central_London}} Category:City_of_London Category:Southwark Category:Bridges_completed_in_the_1st_century Category:Bridges_completed_in_the_1200s Category:Bridges_completed_in_1973 Category:Visitor_attractions_in_London Ca:Pont_de_Londres De:London_Bridge He:גשר_לונדון Nl:London_Bridge No:London_Bridge Sv:London_Bridge Zh:伦敦桥