Fro Bridge (Canal Bridge No 122) is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 21 October 1998. Bridge. 1 related planning application.
Fro Bridge (Canal Bridge No 122)
- WRENN ID
- mired-sill-marsh
- 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
- Fro Bridge (Canal Bridge No 122), Hendreforwydd, Llangattock, Powys, NP8 1LP
- OS grid reference
- SO 185 193
- Coordinates
- 51.86713, -3.18442
- Source
- Cadw listing
Description
Fro Bridge, also known as Canal Bridge No 122, is a single-span hump-backed bridge made of rubble sandstone, featuring a segmental arch and continuous parapets. The arch is constructed with thin voussoirs and has a keystone on the west side. On the east side, which is downstream, there is a cast iron plaque displaying the bridge number in relief. The parapets are splayed to the northeast and southwest, following the curve of the road. On the northwest side, the parapet ends in a pier, while the southeast end is straight but reinforced with a buttress. The copings consist of flat stones on the west side and concrete on the east side. Additionally, the bridge has been strengthened by 16 iron ribs in the arch soffit, with concrete placed between them.
Local climate
Fro Bridge (Canal Bridge No 122) 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.
More on this building
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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- 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
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