Abercamlais Bridge/ Pont Abercamlais and door in attached wall to NE is a Grade II* listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 17 January 1963. Bridge. 2 related planning applications.

Abercamlais Bridge/ Pont Abercamlais and door in attached wall to NE

WRENN ID
final-finial-ash
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 January 1963
Type
Bridge
Address
Abercamlais Bridge/ Pont Abercamlais and door in attached wall to NE, Trallong, Powys, LD3 8EY
OS grid reference
SN 965 290
Coordinates
51.95042, -3.50704
Source
Cadw listing

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

Description

Abercamlais Bridge, also known as Pont Abercamlais, is a large rubble stone bridge built with four broad segmental arches. The arches feature cut stone voussoirs and are supported by elongated hexagonal piers. On the eastern side, the cutwaters rise to form three pedestrian refuges. The dimensions of the arches include two measuring 8.5 meters (28 feet), one at 8 meters (26 feet), and one at 4.5 meters (15 feet).

The widened western side has arches where the stone voussoirs meet the cutwaters, which are chamfered off below the level of the parapet, except for the northern cutwater that extends up to form a pedestrian refuge. The eastern parapet is made of squared stone with flat copings and connects to a section of stone wall to the north. This wall features a basket-arched doorway framed by a pediment of cut tooled stone, complete with stone voussoirs. The western parapet has rougher coping stones. At the southern end of the bridge, there is a large single stone pier that includes a wrought iron gate.

Local climate

Abercamlais Bridge/ Pont Abercamlais and door in attached wall to NE sits in one of the wettest parts of the UK, with an average of 1,240 mm of rain a year. This makes it wetter than 92% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 83% of listed buildings.

It experiences an average of 49 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • No sale records on file
  • Related listed building consents — 2 applications
  • 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. Stable Court at Abercamlais Grade II 47 m
  2. Abercamlais including Dovecote Cottage Grade I 58 m
  3. Bridge over Camlais to N of the Pigeon House at Abercamlais Grade II 79 m
  4. Pigeon house at Abercamlais Grade II* 89 m
  5. Suspension bridge at Abercamlais Grade II 98 m
  6. Walls of walled garden N of suspension bridge Grade II 116 m
  7. Milestone E of Abercamlais drive Grade II 260 m
  8. The Lodge Grade II 301 m
  9. Abersefin Grade II 485 m
  10. Barn at Abersefin Grade II 498 m