Pont Llwni (partly in Llandysul Community) is a Grade II listed building in the Ceredigion local planning authority area, Wales. First listed on 21 September 1964. Bridge. 1 related planning application.

Pont Llwni (partly in Llandysul Community)

WRENN ID
worn-corridor-marsh
Grade
II
Local Planning Authority
Ceredigion
Constituency
Caerfyrddin MP: Ann Davies (PC)
Country
Wales
Date first listed
21 September 1964
Type
Bridge
Address
Pont Llwni (partly in Llandysul Community), Maesycrugiau, Llanllwni, Carmarthenshire, SA39 9LT
OS grid reference
SN 472 412
Coordinates
52.04881, -4.22938
Source
Cadw listing

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

Description

Pont Llwni is a rubble-stone road bridge dating to an unknown period. It is a single span designed to carry two carriages, with a smaller flood arch on the north (Ceredigion) bank. The arches are slightly recessed. On the upstream side of the north bank, a V-shaped stepped cutwater is located between the arches, while downstream a shallow stepped buttress is present. The bridge, along with a lengthy approach on the north side, features a coped parapet.

Local climate

Pont Llwni (partly in Llandysul Community) sits in one of the wettest parts of the UK, with an average of 1,270 mm of rain a year. This makes it wetter than 94% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 92% of listed buildings.

It experiences an average of 35 freeze-thaw cycles a year, more than 54% of listed buildings. Of these, 17 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.
  • Sale history — 1 transaction since 2025
  • 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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