Bridge at Abercynafon is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 17 December 1998. Bridge.

Bridge at Abercynafon

WRENN ID
second-frieze-jet
Grade
II
Local Planning Authority
Brecon Beacons National Park
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
17 December 1998
Type
Bridge
Address
Bridge at Abercynafon, Glyn Collwn, Talybont-On-Usk, Powys
OS grid reference
SO 080 175
Coordinates
51.84876, -3.33585
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The bridge at Abercynafon is a segmental arched river bridge built from snecked dressed stone. It features narrow dressed stone voussoirs and has curved parapets with replaced saddle back coping. In the center, there may be a datestone that is either illegible or was never carved. The bridge also has curved abutments, approaches, and parapets.

Local climate

Bridge at Abercynafon sits in one of the wettest parts of the UK, with an average of 1,200 mm of rain a year. This makes it wetter than 91% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 80% of listed buildings.

It experiences an average of 54 freeze-thaw cycles a year, more than 95% 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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  • No EPC on record for this property
  • No sale records on file
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  • 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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Nearby listed buildings

  1. Abercynafon farmhouse and attached farm range Grade II 37 m
  2. Barn at Abercynafon Grade II 48 m
  3. Pont Blaen-y-glyn Grade II 1.8 km
  4. Torpantau tunnel - E portal Grade II 2.5 km
  5. Pirgad including attached farm range Grade II 2.5 km
  6. Torpantau tunnel - W portal Grade II 3.0 km
  7. Ystradgynwyn Grade II 3.6 km
  8. Barn at Nantllanerch Grade II 3.6 km
  9. Nantllanerch farmhouse and attached farm range Grade II 3.7 km
  10. Pont Cwmyfedwen Grade II 4.0 km