James McIlquham was appointed contractor.[10] The aqueduct is 150 yards (137.2 m) long with three arches built of Bath Stone, with Doric pilasters, and balustrades at each end.[11] The central semicircular arch spans 64 feet (19.5 m); the two oval side arches span 20 feet (6.1 m).[12] It is a grade I listed building,[13] and was the first canal structure to be designated as a Scheduled Ancient Monument in 1951.[14][15] The stretch of river below and above the aqueduct, where it is joined by Midford Brook, is used by the Bluefriars of the Monkton Combe School Boat Club up to six days a week since at least the 1960s.[16]