Afon Taff Viaduct

The viaduct is constructed of heavily rusticated stone with smooth faced ashlar only in the orignal Brunel arch soffits. The stone is conglomerate for the first two builds and probably limestone for the third build. Both faces, however, are second build, the upstream one was reused in the third build, while the downstream one is as left by the second build. The viaduct is about 45m in length and 7m high. It has five arches with bull nosed piers, each with a roll moulded cornice. The arches are segmental, and above this a roll moulded cornice to the parapet. The upstream face has had a concrete footbridge added; this is supported off the tops of the cutwaters. The soffits of the arches clearly demonstrate the three builds, the original Brunel one, the widening on the downstream side and the second and greater widening on the upstream side.