Railway Viaduct Including Redundant Piers, Over River Allen

The railway viaduct over the River Allen, including redundant piers, was built in 1858, with the present structure completed in 1904. The redundant piers from the original 1858 design were created by Isambard Kingdom Brunel. The viaduct features dressed granite Brunel piers, along with rock-faced granite and brick arches, topped with a rendered parapet fascia. It consists of 18 spans, with 15 surviving Brunel piers. Most of the piers are rectangular in shape, while five of Brunel's piers are H-shaped. The round arches are supported by tapered piers that have corbels for timber centring, with brickwork above the level of the piers. Additionally, there are iron refuges along the structure. The Brunel piers are spaced 60 feet apart and were originally connected by fan-shaped timber constructions.