Pont-Rhyd-y-Fen aqueduct & viaduct, broad side view from West side. April 1963
Grid ref: 795491.
The large stone four-span bridge was originally constructed by John Reynolds as an aqueduct carrying water across the Afan valley to supply the waterwheel powering the blast furnace at Cwmavon Ironworks. It was later converted to a viaduct. It measures c. 135m in length, is over 23m high and c. 4m wide, and comprises four round headed arches whose piers are splayed rectangular in section. When completed, in 1827, it was the largest aqueduct in Britain.