Brynnau Gwynion Overbridge is a Grade II listed building in the Rhondda Cynon Taf local planning authority area, Wales. First listed on 5 April 2016. Bridge.
Brynnau Gwynion Overbridge
- WRENN ID
- upper-lintel-ridge
- Grade
- II
- Local Planning Authority
- Rhondda Cynon Taf
- Constituency
- Pontypridd MP: Alex Davies-Jones (Lab)
- Country
- Wales
- Date first listed
- 5 April 2016
- Type
- Bridge
- Address
- Brynnau Gwynion Overbridge, Coychurch Road, Llanharan, Rhondda Cynon Taff
- OS grid reference
- SS 974 823
- Coordinates
- 51.53073, -3.47976
- Source
- Cadw listing
Description
Brynnau Gwynion Overbridge is a railway bridge featuring a single span and skewed masonry design, complemented by projecting wingwalls. It is built from coursed and squared rock-faced sandstone, which includes rusticated voussoirs, along with a section of red brick laid in diagonal courses. The parapet has been partially recapped.
Local climate
Brynnau Gwynion Overbridge sits in one of the wettest parts of the UK, with an average of 1,170 mm of rain a year. This makes it wetter than 90% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 94% of listed buildings.
It experiences an average of 19 freeze-thaw cycles a year, fewer than 80% of listed buildings. Of these, 7 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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