Pont Tafarn-helyg is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 25 February 2005. Road bridge.
Pont Tafarn-helyg
- WRENN ID
- wild-gravel-spring
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 25 February 2005
- Type
- Road bridge
- Address
- Pont Tafarn-helyg, Gellilydan, Maentwrog, Gwynedd
- OS grid reference
- SH 687 396
- Coordinates
- 52.93842, -3.95487
- Source
- Cadw listing
Description
Pont Tafarn-helyg is a road bridge likely built in the mid-19th century, constructed from coursed rubble masonry. It features a single segmental arch made of stone voussoirs with a pendant keystone, flanked by raking buttresses. On the left side (east), there is a rectangular flood drain. The bridge has a drip course leading to a low parapet wall, which was raised and extended to the east at a later date, topped with raking stone slab coping.
Local climate
Pont Tafarn-helyg sits in one of the wettest parts of the UK, with an average of 1,450 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.
It experiences an average of 36 freeze-thaw cycles a year, more than 60% 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.
More on this building
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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 3 transactions since 2006
- 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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