Railway Bridge at Treble Hill

Railway bridge of c1864-5 for the Hereford, Hay and Brecon Branch of the Mid-Wales Railway. Rock faced ashlar sandstone, the corners and features margin-draughted, and the vault turned in brick. Tall semi-circular arch rising from a projecting string course, the voussoirs and keystones pronounced, and flanked by piers having a pilaster standing forward of the sharply curved flank retaining walls of the embankment. Limestone cornice and caps to the pilasters. The bridge is in its original condition on the NW side, the parapet slightly extended in iron on the SE side.