Railway viaduct at Cwm Ffrwd-oer is a Grade II listed building in the Torfaen local planning authority area, Wales. First listed on 21 October 2003. Railway viaduct.
Railway viaduct at Cwm Ffrwd-oer
- WRENN ID
- weathered-mortar-tide
- Grade
- II
- Local Planning Authority
- Torfaen
- Constituency
- Torfaen MP: Nick Thomas-Symonds (Lab)
- Country
- Wales
- Date first listed
- 21 October 2003
- Type
- Railway viaduct
- Address
- Railway viaduct at Cwm Ffrwd-oer, Pontypool, Pen Tranch
- OS grid reference
- SO 261 019
- Coordinates
- 51.71098, -3.06991
- Source
- Cadw listing
Description
The railway viaduct at Cwm Ffrwd-oer is constructed from rock-faced square stone and features four large round arches made of red brick, which are arranged in four rings on substantial piers with tooled leading edges. Below the parapet, there is a heavy rock-faced stone string, topped with massive rock-faced stone copings. The viaduct has a slight curve.
Local climate
Railway viaduct at Cwm Ffrwd-oer sits in a wetter-than-average part of the UK, with an average of 1,020 mm of rain a year. This makes it wetter than 81% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 75% of listed buildings.
It experiences an average of 43 freeze-thaw cycles a year, more than 81% of listed buildings. Of these, 20 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.
Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.
More on this building
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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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