Y Bont Fawr is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 19 June 1990. Bridge. 1 related planning application.
Y Bont Fawr
- WRENN ID
- spare-solder-clover
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 19 June 1990
- Type
- Bridge
- Address
- Y Bont Fawr, Dolgellau, Gwynedd, LL40 1DF
- OS grid reference
- SH 728 179
- Coordinates
- 52.74451, -3.88496
- Source
- Cadw listing
Description
Y Bont Fawr is a twin carriageway stone bridge that slopes from north to south. It features seven arches, with the southern five dating from the 17th century, extending up to the spandrels, and constructed with stone voussoirs and buttresses. The two northern arches and the upstream side were modified in the late 19th century, showcasing recessed arch rings, stone voussoirs, and rock-faced masonry. The bridge has prow-shaped cutwaters, with two modern additions on the upstream side. The late 19th-century parapet includes a string course and capstones that have been reused from earlier work. Plain pilasters rise from the buttresses on the downstream side.
Local climate
Y Bont Fawr sits in one of the wettest parts of the UK, with an average of 1,340 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 93% of listed buildings.
It experiences an average of 34 freeze-thaw cycles a year, more than 52% of listed buildings. Of these, 17 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
- Related listed building consents — 1 application
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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