Pont-y-pandy and causeway is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 8 February 1999. Bridge.
Pont-y-pandy and causeway
- WRENN ID
- fallow-finial-autumn
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 8 February 1999
- Type
- Bridge
- Address
- Pont-y-pandy and causeway, Pentreuchaf, Pwllheli, Llannor
- OS grid reference
- SH 353 387
- Coordinates
- 52.92108, -4.45029
- Source
- Cadw listing
Description
Pont-y-pandy is a bridge constructed from local rubble stone. It features a segmental arch made with flush voussoirs, supported by twice offset buttresses, and includes a horizontal string course between the tops of the buttresses. The span of the arch is approximately 3.5 meters, rising about 1.9 meters, and the carriageway is 4 meters wide between the parapets, which are 1.2 meters high and 30 centimeters thick. The inner side of the parapets is rendered and they extend as parapets along the causeway on either side.
Local climate
Pont-y-pandy and causeway sits in one of the wettest parts of the UK, with an average of 1,660 mm of rain a year. This makes it wetter than 99% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 99% of listed buildings.
It experiences an average of 3 freeze-thaw cycles a year, fewer than 99% of listed buildings. Of these, 1 follows 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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