Pont Llwyn-dwfr, (partly in Clynderwen Community rec no 82471) is a Grade II listed building in the Pembrokeshire local planning authority area, Wales. First listed on 15 October 2004. Bridge.

Pont Llwyn-dwfr, (partly in Clynderwen Community rec no 82471)

WRENN ID
waning-basalt-ash
Grade
II
Local Planning Authority
Pembrokeshire
Constituency
Ceredigion Preseli MP: Ben Lake (PC)
Country
Wales
Date first listed
15 October 2004
Type
Bridge
Address
Pont Llwyn-dwfr, (partly in Clynderwen Community rec no 82471), Llanycefn, Maenclochog
OS grid reference
SN 106 233
Coordinates
51.87639, -4.75283
Source
Cadw listing

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

Description

Pont Llwyn-dwfr is a bridge constructed of rubble stone, featuring two arches with recessed designs, stone voussoirs, and raised keystones. It has cutwaters on each side made of squared slaty stone blocks, topped with caps and pyramid shapes. The rubble parapets include long stones that are set vertically at intervals. On the northern parapet, there is a boundary stone with an inscription bordered by rebated corners; the left side reads 'Llandykeven' with a pointing hand below, and the right side states 'Llandissilio Boundary Carmarthenshire'.

Local climate

Pont Llwyn-dwfr, (partly in Clynderwen Community rec no 82471) sits in a wetter-than-average part of the UK, with an average of 1,110 mm of rain a year. This makes it wetter than 88% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 94% of listed buildings.

It experiences an average of 12 freeze-thaw cycles a year, fewer than 89% of listed buildings. Of these, 5 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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  • Detailed attributes — period, style, materials, features
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  • 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. Pont Llwyn Dwfr, including boundary stone (Partly in Maenclochog Community) Grade II 9 m
  2. Llwyn Dwfr Grade II 284 m
  3. Nant-y-Cwm Steiner Kindergarten Grade II 1.2 km
  4. Former Chapel House at Rhydwilym Chapel Grade II 1.7 km
  5. Rhydwilym Baptist Chapel Grade II 1.7 km
  6. Stable and Schoolroom at Rhydwilym Chapel Grade II 1.8 km
  7. Church of Saint Tysilio Grade II 2.0 km
  8. Llandissilio War Memorial Grade II 2.3 km
  9. Pontbren-ddu Grade II 2.4 km
  10. Penrhos Cottage Grade II 2.5 km