Telford, Thomas (1757–1834). Civil engineer from Eskdale (Dumfries). Apprenticeship as a stonemason laid the basis for Telford's move via Edinburgh to London, where he worked on Somerset House (1782), being introduced to Chambers and Adam, before work at Portsmouth dockyard (1784). The patronage of William Pulteney took him to Shrewsbury (1786), where he restored the castle, and built the gaol and the reputation that led to his appointment as ‘general overlooker’ of the Ellesmere canal in 1793, and his transition to civil engineer. Distinguished canal work followed with his aqueduct at Pontcysyllte (1805), the Caledonian canal (1822), contributions to Sweden's Gotha canal (1832), the Birmingham and Liverpool Junction (1835), the last main line, and his replacement tunnel at Harecastle on the Trent and Mersey (1826). As adviser to the British Fisheries Society (1796) he was invited to undertake road- and bridge-building in the Scottish Highlands, and between 1803 and 1824 was responsible for the construction or remodelling of 1,200 miles of road, all constructed on his ‘Roman’ principles, with adequate foundations. His creation of the Shrewsbury–Holyhead road (from 1802) was a parallel developmental project, and at Menai (1825) and Conwy (1826) led to his pioneering development of suspension bridges that was to influence Brunel and others. Nicknamed by Southey ‘the colossus of roads’, he succeeded Rennie as Britain's leading civil engineer, and was a founding member of the Institute of Civil Engineers in 1828.

J. A. Chartres