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Pontrhydyfen Viaduct

A Grade II Listed Building in Pontrhydyfen, Neath Port Talbot

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Latitude: 51.633 / 51°37'58"N

Longitude: -3.7454 / 3°44'43"W

OS Eastings: 279295

OS Northings: 194128

OS Grid: SS792941

Mapcode National: GBR H5.88MF

Mapcode Global: VH5GW.1790

Entry Name: Pontrhydyfen Viaduct

Listing Date: 21 March 2000

Last Amended: 21 March 2000

Grade: II

Source: Cadw

Source ID: 23024

Building Class: Transport

Location: Long viaduct spanning the Afan valley where the river curves round towards the S, and the road which leads from Cwmavon to Pontrhydyfen.

County: Neath Port Talbot

Town: Port Talbot

Community: Cwmavon (Cwmafan)

Community: Cwmavon

Locality: Pontrhydyfen

Built-Up Area: Pontrhydyfen

Traditional County: Glamorgan

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Port Talbot


Built as part of a branch line by the Port Talbot Railway and Docks Co. to link the docks with the coal producing areas to the N. The viaduct crosses the Afan valley, beyond which the line joined the South Wales Mineral Railway. It was constructed in 1897-8 by the contractors Topham, Jones and Railton, and was absorbed soon afterwards by the GWR. It closed in 1964.


Ten-arch railway viaduct of red brick, curving round slightly towards the NW. Tall round arches on narrow splayed piers, the arches consisting of 6 rows of headers on edge. Short abutments at either end. Blue brick string course and red brick parapets with corbelled refuges rising from the spandrels of the arches. The coping is generally of blue bricks on end, replaced in concrete in some areas. The flat deck is now a path and the refuges have been infilled with blue brick with concrete coping. At each end of the deck are pairs of short piers marking the abutments. These and the areas between have massive rock-faced capstones.

Reasons for Listing

Listed as a largely unaltered viaduct of architectural merit which is highly visible and imparts considerable character to the area. The association with Port Talbot docks is of additional historic interest. Group value with Bont Fawr aqueduct.

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