Pont Dyffrdwy is a Grade II* listed building in the Denbighshire local planning authority area, Wales. First listed on 20 October 1966. Bridge.
Pont Dyffrdwy
- WRENN ID
- silent-floor-sage
- Grade
- II*
- Local Planning Authority
- Denbighshire
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 20 October 1966
- Type
- Bridge
- Address
- Pont Dyffrdwy, Cynwyd
- OS grid reference
- SJ 052 412
- Coordinates
- 52.96023, -3.41126
- Source
- Cadw listing
Description
Pont Dyffrdwy is a substantial 4-span bridge built from random stone. It features wide segmental arches made of stone voussoirs with dripstones, and has continuous rubble-stone parapets topped with large flat stone copings. Full-height triangular cut-waters are located between the arches, rising to create refuges on the narrow deck. The deck is humped at the western end, while the eastern end remains level as the ground rises. On the inside of the southern parapet, there is a stone tablet that reads 'Pont Dyffrdwy, Cynwyd, 1612 built, 1989 strengthened, Clwyd County Council'. The ends of the bridge are slightly splayed out, with a stepped abutment on the northeast side. The southwest end curves around at a right angle to follow a lane. The northwest abutment extends for some distance before rising over three low segmental flood arches made of stone voussoirs with dripstones; the parapets here become progressively lower, capped with concrete. To the east of the flood arches, there is a flight of stone steps with a metal handrail that leads down to the riverside.
Local climate
Pont Dyffrdwy sits in a wetter-than-average part of the UK, with an average of 1,050 mm of rain a year. This makes it wetter than 84% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 59% of listed buildings.
It experiences an average of 50 freeze-thaw cycles a year, more than 92% 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
- 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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