Pont Rhiwargor is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 26 February 2003. Bridge.
Pont Rhiwargor
- WRENN ID
- sleeping-flint-tarn
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 26 February 2003
- Type
- Bridge
- Address
- Pont Rhiwargor, Nadroedd Valley, Llanwddyn
- OS grid reference
- SH 963 244
- Coordinates
- 52.80722, -3.53893
- Source
- Cadw listing
Description
Pont Rhiwargor is a vernacular bridge built from local slate masonry. It features a single low-rise segmental arch with a span of approximately 10 meters. The arch is constructed from rough stonework, with each voussoir measuring about 400 millimeters in height. Above the arch, there is roughly axe-dressed masonry, which includes the parapets, and a square string course runs along the base of the parapets.
The carriageway measures about 4 meters in width between the parapets and has a slightly humped profile. The parapets widen at all four corners, with three of them ending in small piers.
Local climate
Pont Rhiwargor sits in a wetter-than-average part of the UK, with an average of 1,120 mm of rain a year. This makes it wetter than 88% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 78% of listed buildings.
It experiences an average of 55 freeze-thaw cycles a year, more than 95% of listed buildings. Of these, 34 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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- 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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