Pont Pen-y-benglog is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 9 March 2000. Bridge.
Pont Pen-y-benglog
- WRENN ID
- turning-jamb-saffron
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Bangor Aberconwy MP: Claire Hughes (Lab)
- Country
- Wales
- Date first listed
- 9 March 2000
- Type
- Bridge
- Address
- Pont Pen-y-benglog, Llanllechid, Gwynedd
- OS grid reference
- SH 649 605
- Coordinates
- 53.12465, -4.02038
- Source
- Cadw listing
Description
Pont Pen-y-benglog is a bridge featuring a small single-span segmental-arched structure made of rubblestone, located on the eastern side and now lacking its road surface. This original bridge has been replaced by a larger and higher bridge that follows the curve of the road to its west. The newer structure is constructed from irregularly coursed rubblestone and includes a slate string course and slate coping on the parapet. It has a wide single-span segmental arch with voussoirs and simple tapering pilaster buttresses on each side. The eastern side of the bridge is completely obscured by mid-20th century widening work directly above the original 18th-century bridge. This later addition is made of roughly coursed rubblestone, with an arch that mirrors the shape of Telford's bridge to the west, featuring a string course and regular pilaster buttresses leading to a straight parapet on this side.
Local climate
Pont Pen-y-benglog sits in one of the wettest parts of the UK, with an average of 1,310 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 47 freeze-thaw cycles a year, more than 88% of listed buildings. Of these, 28 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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