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Cof Cymru: National Historic Assets of Wales · Wales

Quakers Yard Railway Viaduct

Treharris, Merthyr Tydfil, Wales

The record

Designation
Listed building, Grade II*
Broad class
Transport
Date of designation
4 January 1988
Locality
Quakers Yard
Town
Merthyr Tydfil
Community
Treharris
Unitary authority
Merthyr Tydfil
Country
Wales
Coordinates
51.65962, -3.31911
Cadw reference
11514

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1636 "Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ..." (David Rumsey Map Collection, Stanford Libraries).

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This record in Cadw's own full report ↗

Cadw's description

Crossing the Afon Taf just S of Edwardsville.

Railway bridge over the Afon Taf of 1840-1 by I K Brunel built for the Taff Vale Railway, opened April 1841, doubled in width before 1861. A remarkable early railway bridge of massive construction with octagonal piers necessitating deep chamfers to the arches. The viaduct crosses the line of the Penydarren tramroad on the N side of the river.

Railway viaduct over the Afon Taf. Very tall slightly curving viaduct of 6 arches, the original viaduct upstream and only visible from N. Massive rock-faced squared masonry and highly modelled octagonal piers, the rock-facing tooled at edges, banded 3 times with broad 3-course bands of tooled masonry, and the capitals of 6 stepped courses of rock-faced stone. Remarkable arches deeply splayed at edges, the splays in tooled stone as also the arch soffits. Rockfaced stone in spandrels, big coved string course in tooled stone and rock-faced stone parapets with ashlar copings. Splayed out ends to abutments.
Addition of matching scale is simpler, having regular piers, caps in 2 courses, arches with rock-faced stone voussoirs and vermiculated keystones. Coved string course breaks forward over keystones.

Graded II* as one of the most remarkable bridges by Brunel to survive in Wales.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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