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Greenfield Bridge, Penydarren Tramroad

A Grade II* Listed Building in Treharris, Merthyr Tydfil

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Latitude: 51.6603 / 51°39'37"N

Longitude: -3.3166 / 3°18'59"W

OS Eastings: 309024

OS Northings: 196544

OS Grid: ST090965

Mapcode National: GBR HR.6NGF

Mapcode Global: VH6DC.GJHK

Entry Name: Greenfield Bridge, Penydarren Tramroad

Listing Date: 20 February 2003

Last Amended: 20 February 2003

Grade: II*

Source: Cadw

Source ID: 80907

Building Class: Transport

Location: Crossing the Afon Taf some 200m NE of the railway viaduct at Quakers Yard.

County: Merthyr Tydfil

Town: Merthyr Tydfil

Community: Treharris

Community: Treharris

Locality: Quakers Yard

Built-Up Area: Treharris

Traditional County: Glamorgan

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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.

Reasons for Listing

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

Other nearby listed buildings

  • II* Quakers Yard Railway Viaduct
    Crossing the Afon Taf just S of Edwardsville.
  • II* Victoria Bridge, Penydarren Tramroad
    Crossing the Afon Taf just N and W of Cardiff Road and some 75m N of Bryneulog Terrace.
  • II Lock House
    At the NE community boundary in an area known as Five Locks, just W of the A470 and reached by a tra
  • II Berthlwyd
    In a prominent location on the hill S of Quakers Yard, reached by a track W off Pentwyn Road.
  • II Treharris Public Library
    Situated near the centre of Treharris, on the E side of Perrott Street just N of its junction with J
  • II Tabernacle Independent Chapel.
    In centre of Treharris, opposite Bethel Chapel, on rise overlooking valley. Iron rails along side an
  • II Pont y Gwaith
    Reached down a steep by-road from the old Cardiff to Merthyr road; by-road crosses the former Taff V
  • II Pontygwaith Rail Overbridge
    Reached down a steep by-road from the old Cardiff to Merthyr road; by-road crosses the former Taff V

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