Neath Abbey Railway Viaduct (partly in Blaenhonddan community)

The Neath Abbey Railway Viaduct is a railway viaduct that spans a road and river valley. It is constructed from squared coursed rubble stone with cut sandstone dressings. The first arch over the road features cut stone voussoirs forming an elliptical shape, supported by broad stone piers on either side. These piers have a two-step cut-stone cornice that extends forward beneath a high parapet, which includes a raised plinth and cut stone coping. The stonework beneath this arch is skewed. The second arch is broader and shallower, lacking additional raised piers. The piers between the subsequent arches are divided axially by a narrow arch. The second pier, still at a high level, has only the arch head visible from beneath the second arch. In contrast, the three much taller arches of the gorge exhibit dramatically split piers, with tooled cut stone voussoirs and finely tooled stone on the piers, which is of much higher quality than that seen in the two end arches.