Pont Pengwern is a Grade II listed building in the Conwy local planning authority area, Wales. First listed on 21 July 1999. Bridge.
Pont Pengwern
- WRENN ID
- old-storey-meadow
- Grade
- II
- Local Planning Authority
- Conwy
- Constituency
- Bangor Aberconwy MP: Claire Hughes (Lab)
- Country
- Wales
- Date first listed
- 21 July 1999
- Type
- Bridge
- Address
- Pont Pengwern, Llansannan
- OS grid reference
- SH 978 669
- Coordinates
- 53.19012, -3.5298
- Source
- Cadw listing
Description
Pont Pengwern is a tall limestone road bridge featuring a short single span culvert at its base. It is constructed from hammer-faced limestone arranged in courses, with a slab dripcourse and parapet capping. The walls of the bridge curve outward on either side of the culvert, which is located at the base of a narrow river valley. The culvert itself has a single span arch made of roughly dressed stone voussoirs, complete with a stressed keystone and dripcourse. Tall tapering buttresses flank the arch, extending to the dripcourse at the base of the parapet, and these buttresses are mirrored by a sloping projecting bay at the extreme end of both sides. The arched roof of the culvert is lined with brick.
Local climate
Pont Pengwern sits in a wetter-than-average part of the UK, with an average of 990 mm of rain a year. This makes it wetter than 79% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 50% of listed buildings.
It experiences an average of 28 freeze-thaw cycles a year, fewer than 69% of listed buildings. Of these, 15 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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