Pont Cwellyn No 1 and Pont Cwellyn No 2 (also known together as Pont Glan-yr-afon) is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 29 January 1999. Bridge.
Pont Cwellyn No 1 and Pont Cwellyn No 2 (also known together as Pont Glan-yr-afon)
- WRENN ID
- gentle-tower-spindle
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 29 January 1999
- Type
- Bridge
- Address
- Pont Cwellyn No 1 and Pont Cwellyn No 2 (also known together as Pont Glan-yr-afon), Caernarfon, Betws Garmon, Gwynedd
- OS grid reference
- SH 568 540
- Coordinates
- 53.06435, -4.13808
- Source
- Cadw listing
Description
Pont Cwellyn No 1 and Pont Cwellyn No 2, also known as Pont Glan-yr-afon, is a bridge constructed from roughly coursed rubblestone with stone-on-edge coping. It features three arches: the southern arch, which spans the Afon Gwyrfai, is round-arched, while the center arch, serving as a flood relief arch, and the northern arch, which crosses the Afon Treweunydd, are both segmental. All arches are built with voussoirs and arch-rings. Additionally, there is a walled refuge on the west side of the bridge, located opposite the driveway to Glanrafon.
Local climate
Pont Cwellyn No 1 and Pont Cwellyn No 2 (also known together as Pont Glan-yr-afon) sits in one of the wettest parts of the UK, with an average of 1,360 mm of rain a year. This makes it wetter than 96% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 95% of listed buildings.
It experiences an average of 40 freeze-thaw cycles a year, more than 78% of listed buildings. Of these, 22 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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