Pont y Cefn is a Grade II listed building in the Merthyr Tydfil local planning authority area, Wales. First listed on 5 November 2002. Bridge.
Pont y Cefn
- WRENN ID
- frozen-soffit-indigo
- Grade
- II
- Local Planning Authority
- Merthyr Tydfil
- Constituency
- Merthyr Tydfil and Aberdare MP: Gerald Jones (Lab)
- Country
- Wales
- Date first listed
- 5 November 2002
- Type
- Bridge
- Address
- Pont y Cefn, Cefn Coed-Y-Cymmer, Gurnos
- OS grid reference
- SO 037 075
- Coordinates
- 51.75875, -3.39601
- Source
- Cadw listing
Description
Pont y Cefn is a road bridge constructed in ferro-concrete, featuring a single open arch supported by vertical piers in the spandrels between the arch and the carriageway. The balustrades and rails may have been modified or replaced over time. The bridge is built at a significant angle over the Afon Taff Fechan, with a carriageway that is 5.4 meters wide. The parapets rise to about 1.3 meters in height, and there is a 2.1-meter-wide footpath on the northern side only. Additionally, the carriageway extends beyond the main bridge structure on the eastern side, likely to accommodate a path or track.
Local climate
Pont y Cefn sits in one of the wettest parts of the UK, with an average of 1,270 mm of rain a year. This makes it wetter than 94% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 85% of listed buildings.
It experiences an average of 54 freeze-thaw cycles a year, more than 94% of listed buildings. Of these, 30 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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