4487 x 2676 px | 38 x 22,7 cm | 15 x 8,9 inches | 300dpi
Data acquisizione:
2011
Altre informazioni:
By the end of the 18th century, it was apparent that the old London Bridge — by then over 600 years old — needed to be replaced. It was narrow and decrepit, and blocked 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 feet (180 m). However this design was never used, because of uncertainty about its feasibility and the amount of land needed for its construction. The bridge was eventually replaced by a 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 by Rennie's son of the same name. Work began in 1824 and the foundation stone was laid, in the southern coffer dam, on 15 June 1825. The old bridge continued in use while the new bridge was being built, and was demolished after the latter opened in 1831. The scheme necessitated the building of major new approach roads, which cost three times as much as the bridge itself. The total construction cost of around £2.5 million (£186 million as of 2011), was met by the Corporation of London and government[clarification needed]. The contractors were Jolliffe and Banks of Merstham, Surrey. A fragment from the old bridge is set into the tower arch inside St Katharine's Church, Merstham. Rennie's bridge had a length of 928 feet (283 m) and a width of 49 feet (15 m). Haytor granite was used in the construction, transported via the unique Haytor Granite Tramway. The official opening took place on 1 August 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.
