Dundas Aqueduct

Dundas Aqueduct carries the Kennet and Avon Canal over the River Avon and the Wessex Main Line railway from Bath to Westbury. The aqueduct is near Monkton Combe, Somerset, and is about 2+1⁄2 miles southeast of the city of Bath.

It was designed by John Rennie and chief engineer John Thomas between 1797 and 1801, and completed in 1805. James McIlquham was appointed contractor. It is named after Charles Dundas, the first chairman of the Kennet and Avon Canal Company. The aqueduct is 150 yards long with three arches built of Bath Stone, with Doric pilasters, and balustrades at each end. The central semi-circular arch spans 64 feet; the two oval side arches span 20 feet.The canal crosses back across the Avon and the railway on another aqueduct at Avoncliff. This diversion onto the right bank of the Avon avoids the steep sides of the river valley at Limpley Stoke, and the need to cross the Midford Brook and River Frome.