Cymmer Bridge is a Grade II listed building in the Neath Port Talbot local planning authority area, Wales. First listed on 31 July 2000. Bridge.
Cymmer Bridge
- WRENN ID
- rough-forge-grove
- Grade
- II
- Local Planning Authority
- Neath Port Talbot
- Constituency
- Aberafan Maesteg MP: Stephen Kinnock (Lab)
- Country
- Wales
- Date first listed
- 31 July 2000
- Type
- Bridge
- Address
- Cymmer Bridge, Glyncorrwg
- OS grid reference
- SS 860 962
- Coordinates
- 51.65363, -3.64923
- Source
- Cadw listing
Description
Cymmer Bridge is a double carriageway bridge made of ferro-concrete, featuring a pair of arch ribs that are braced together and rise from main rusticated piers. These arch ribs support vertical spandrel columns, which in turn hold up the decking and parapet. The main piers extend above the parapets and are topped with saddleback copings. The open-work parapets are built in sections, featuring narrow vertical panels and moulded copings. They curve outward at the ends, except for the southwest end, where they finish in square rusticated piers. The southwest pier includes an inset bronze plaque with relief lettering that commemorates the bridge's erection and opening. The flat deck is covered with tarmac and has footways on each side.
Local climate
Cymmer Bridge 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.
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- Detailed attributes — period, style, materials, features
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- 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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