IIGarndiffaith Railway Viaduct Approximately 250m east of the B4246. Spanning the steep sided valley of the river Ffrwd between the northern part of Talywain and the southern part of Garndiffaith.
IIPontrhydyfen Viaduct Long viaduct spanning the Afan valley where the river curves round towards the S, and the road which leads from Cwmavon to Pontrhydyfen.