Continuing to the south-west, the river is crossed by the A472 and A470 roads, and at Abercynon is crossed by the B4275 road. Immediately to the south of the bridge was an aqueduct carrying the defunct Glamorganshire Canal over the river. The Afon Cynon joins on the right bank, and close to the junction is spanned by a skewed railway bridge with two arches of unequal sizes. The valley then widens, and the river begins to meander. On the northern edge of Glyncoch, the river is joined by the Nant Clydach on its right bank, and to the south of the settlement is crossed by a three-bay girder viaduct, built in 1885 to carry a branch of the Taff Vale Railway over the river to Albion Colliery at Cilfynydd. Just to the south is White or Berw Bridge, designed by Pontypridd Urban District Council's surveyor, P R A Willoughby. It was built in 1907, aided by L G Mouchel & Partners, who pioneered the use of reinforced concrete, and the span over the river was the longest arch in Britain using this material when it was constructed. The next crossing is Pontypridd Bridge, a high-arched single span of . It was built in 1756 by an Independent minister and self-taught civil engineer called William Edwards, and was his third attempt, after his two earlier bridges collapsed. It features three round openings in its spandrels, a device he used to relieve the pressure on an unusually wide arch. It was repaired by Edward David and Thomas Evan in 1798, and is attached to the newer Victoria Bridge on its south side.