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Cof Cymru: National Historic Assets of Wales · Wales

Greenfield Bridge, Penydarren Tramroad

Treharris, Merthyr Tydfil, Wales

The record

Designation
Listed building, Grade II*
Broad class
Transport
Date of designation
20 February 2003
Locality
Quakers Yard
Town
Merthyr Tydfil
Community
Treharris
Unitary authority
Merthyr Tydfil
Country
Wales
Coordinates
51.66029, -3.31666
Cadw reference
80907

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 some 200m NE of the railway viaduct at Quakers Yard.

Tramroad bridge over the River Taff built after 1815 for the Penydarren tramroad to replace a wooden bridge which collapsed 15/2/1815 when a train was passing over. The arch of 19.2m span rising 8.4m above the river is among the largest early railway bridges in the world. In poor condition 2002. Said to incorporate abutments of former bridge, but another abutment survives adjoining.

Tramroad bridge, rubble stone, high single arch with thin cut stone voussoirs of tooled stone with raised keystones. Rubble stone parapets with cement capping. Large square abutments.

Graded II* as a surviving early tramroad bridge of remarkable scale and exceptional historic interest.
Scheduled Ancient Monument Gm 359c.

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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