- Rennie, John
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born June 7, 1761, Phantassie, East Lothian, Scot.died Oct. 4, 1821, London, Eng.Scottish civil engineer.He built three bridges across the Thames at London: Waterloo Bridge (since replaced), the old Southwark Bridge (1814–19), and the New London Bridge (completed 1831 and since replaced). He worked on extensive drainage projects in the Lincolnshire fens; built the London and East India docks on the Thames; improved naval dockyards at Plymouth, Portsmouth, Chatham, and Sheerness; and began the great breakwater that shelters Plymouth Sound.
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▪ Scottish civil engineerborn June 7, 1761, Phantassie, East Lothian, Scotlanddied October 4, 1821, London, EnglandScottish civil engineer who built or improved canals, docks, harbours, and bridges throughout Britain. Three of his spans were built across the River Thames at London.Rennie began his career as a millwright, and his first major work was designing the machinery for Matthew Boulton (Boulton, Matthew) and James Watt (Watt, James)'s project at the Albion Flour Mills in London. Rennie greatly extended the use of iron for gears and other parts of machinery.In the 1790s Rennie began work on the Kennet and Avon Canal in Wiltshire and canals in Rochdale, Lancaster, and elsewhere. From about 1800 he worked on extensive drainage projects in the Lincolnshire fens; constructed or improved harbours, including Wick, Grimsby, Holyhead, and Hull; built the London and East and West India docks (London Docklands) on the Thames; improved naval dockyards at Plymouth, Portsmouth, Chatham, and Sheerness; and began the breakwater that shelters Plymouth Sound.Rennie is best known, however, for his London bridges: Waterloo Bridge (1811–17; replaced 1937–45), composed of masonry arches; Southwark Bridge (1814–19; replaced 1912–21), composed of three cast-iron arches; and the New London Bridge (London Bridge) (opened in 1831 and moved more than 130 years later to Lake Havasu City, Arizona, U.S.), made of multiple masonry arches.After Rennie's death his sons took over his business. George, the elder, ran the mechanical engineering side, and John (later Sir John) ran the civil engineering side, including the completion of London Bridge and the Plymouth breakwater.* * *
Universalium. 2010.
