Bridge to SW of Traihirion (partly in Merthyr Cynog community) is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 3 February 1992. Bridge.
Bridge to SW of Traihirion (partly in Merthyr Cynog community)
- WRENN ID
- bitter-postern-wagtail
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 3 February 1992
- Type
- Bridge
- Address
- Bridge to SW of Traihirion (partly in Merthyr Cynog community), Lower Chapel, Brecon, Honddu Isaf
- OS grid reference
- SO 026 359
- Coordinates
- 52.01323, -3.41967
- Source
- Cadw listing
Description
This is a packhorse bridge located to the southwest of Traihirion, partly within the Merthyr Cynog community. It features a humped single arch without parapets. The arch is segmental and constructed with thin stone voussoirs, topped with just thin coping stones, and there is some rubble stone in the spandrels. The roadway is cobbled, higher in the middle and undulating towards the sides. The upstream side shows eroded abutments, which have caused some movement in the soffit.
Local climate
Bridge to SW of Traihirion (partly in Merthyr Cynog community) sits in one of the wettest parts of the UK, with an average of 1,170 mm of rain a year. This makes it wetter than 90% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 79% of listed buildings.
It experiences an average of 50 freeze-thaw cycles a year, more than 91% of listed buildings. Of these, 28 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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