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Pontsarn Railway Viaduct (also in Vaynor)

A Grade II* Listed Building in Pant, Merthyr Tydfil

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Latitude: 51.7798 / 51°46'47"N

Longitude: -3.3851 / 3°23'6"W

OS Eastings: 304538

OS Northings: 209919

OS Grid: SO045099

Mapcode National: GBR YP.Z2YZ

Mapcode Global: VH6CR.8JRH

Entry Name: Pontsarn Railway Viaduct (also in Vaynor)

Listing Date: 22 August 1975

Last Amended: 11 March 2003

Grade: II*

Source: Cadw

Source ID: 11484

Building Class: Transport

Location: Crossing the Afon Taf Fechan just N of Pontsarn and some 600m NW of the remains of Morlais Castle.

County: Merthyr Tydfil

Community: Pant

Community: Pant

Locality: Pontsarn

Traditional County: Glamorgan

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Railway viaduct, built 1866 by Henry Conybeare and Alexander Sutherland for Savin and Ward. The viaduct carried the former Brecon and Merthyr Railway high over the Afon Taff Fechan and was built of limestone from railway cuttings. The viaduct was designed for double-line working but a single track only was installed, on the N side. In deteriorating condition at time of survey.


Railway viaduct of 7 arches; abutments, tall slender piers and parapets of coursed irregular sized rock-faced limestone blocks and seven segmental arches with limestone voussoirs . The piers have a projecting impost band and a projecting string course below the parapets. The viaduct is built on a straight line some 138m long and has a maximum height of approximately 28m.

Reasons for Listing

Included at II* as an historically important and architecturally impressive railway viaduct. Part of the same railway engineering project as the Cefn Coed viaduct (also Grade II*).

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