Croeserw Viaduct is a Grade II listed building in the Neath Port Talbot local planning authority area, Wales. First listed on 31 July 2000. Viaduct.
Croeserw Viaduct
- WRENN ID
- sunken-panel-tarn
- Grade
- II
- Local Planning Authority
- Neath Port Talbot
- Constituency
- Aberafan Maesteg MP: Stephen Kinnock (Lab)
- Country
- Wales
- Date first listed
- 31 July 2000
- Type
- Viaduct
- Address
- Croeserw Viaduct, Cymmer, Glyncorrwg
- OS grid reference
- SS 864 960
- Coordinates
- 51.65165, -3.64289
- Source
- Cadw listing
Description
Croeserw Viaduct is a 7-bay structure built from snecked, rock-faced stone, featuring round-headed brick arches supported by tapering piers. It has two unequally placed shallow buttresses that reach the full height of the parapet, creating defined refuges. The parapet is situated above a string course and is topped with rock-faced copings, although some of the copings and other stonework are now partly missing. The parapets end in square piers.
Local climate
Croeserw Viaduct sits in one of the wettest parts of the UK, with an average of 1,300 mm of rain a year. This makes it wetter than 95% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 93% of listed buildings.
It experiences an average of 39 freeze-thaw cycles a year, more than 74% of listed buildings. Of these, 18 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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