Dyfnant Bridge (Canal Bridge No 125) is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 21 October 1998. Bridge.
Dyfnant Bridge (Canal Bridge No 125)
- WRENN ID
- deep-lintel-martin
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 21 October 1998
- Type
- Bridge
- Address
- Dyfnant Bridge (Canal Bridge No 125), Pen-Y-Bryn, Llangattock, Powys
- OS grid reference
- SO 174 196
- Coordinates
- 51.86914, -3.20036
- Source
- Cadw listing
Description
Dyfnant Bridge, also known as Canal Bridge No 125, is a single-span hump-backed bridge made of rubble sandstone. It features an asymmetrical segmental arch with thin voussoirs and keystones, and has continuous parapets. The parapets are splayed and include square end piers with copings made of upright stones, except in areas where repairs have been made. On the eastern side, which faces downstream, there is a cast iron plaque displaying the bridge number in relief. To the northwest, the parapet is supported by a retaining wall that leads to the driveway. Additionally, a stone stile providing access to the towpath is incorporated into this wall.
Local climate
Dyfnant Bridge (Canal Bridge No 125) sits in a wetter-than-average part of the UK, with an average of 1,100 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 74% of listed buildings.
It experiences an average of 54 freeze-thaw cycles a year, more than 94% of listed buildings. Of these, 30 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.
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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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