Cwm-yr-hafod Bridge is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 26 February 2003. Bridge.
Cwm-yr-hafod Bridge
- WRENN ID
- swift-obsidian-birch
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 26 February 2003
- Type
- Bridge
- Address
- Cwm-yr-hafod Bridge, Lake Vyrnwy, Llanwddyn
- OS grid reference
- SH 974 213
- Coordinates
- 52.78001, -3.52232
- Source
- Cadw listing
Description
Cwm-yr-hafod Bridge is a bridge of high segmental form, built with rock-faced masonry and spanning approximately 6 meters. It features rock-faced voussoirs and an enlarged keystone. The low parapets include a string course at the base and a coping, both made of rock-faced masonry with chisel drafted margins. The parapets are terminated by four small piers that have rounded copings, and there are rounded wing walls. The carriageway is about 5 meters wide.
Local climate
Cwm-yr-hafod Bridge sits in a wetter-than-average part of the UK, with an average of 1,120 mm of rain a year. This makes it wetter than 88% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 78% of listed buildings.
It experiences an average of 55 freeze-thaw cycles a year, more than 95% of listed buildings. Of these, 34 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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