Bridge at the mouth of the Afon Ogwen (partly in Llandygai community) is a Grade II* listed building in the Gwynedd local planning authority area, Wales. First listed on 9 March 2000. Bridge.
Bridge at the mouth of the Afon Ogwen (partly in Llandygai community)
- WRENN ID
- over-plaster-rowan
- Grade
- II*
- Local Planning Authority
- Gwynedd
- Constituency
- Bangor Aberconwy MP: Claire Hughes (Lab)
- Country
- Wales
- Date first listed
- 9 March 2000
- Type
- Bridge
- Address
- Bridge at the mouth of the Afon Ogwen (partly in Llandygai community), Penrhyn Park, Llanllechid
- OS grid reference
- SH 610 721
- Coordinates
- 53.22809, -4.08269
- Source
- Cadw listing
Description
The bridge at the mouth of the Afon Ogwen, partly located in the Llandygai community, is a Grade II* listed structure. It is constructed of cast iron with rubblestone abutments that end in square corner piers made of more regularly coursed blocks. The eastern bank's piers extend beyond the retaining riverbank wall into the river, while the western piers are situated on top of the retaining wall. The bridge features a single span with a wide segmental arch, which is formed by three cast-iron girders and spandrels. The girders have a criss-cross pattern, and the spandrels display simple diamond shapes that decrease in size. A simple iron handrail with stick balusters runs along the bridge, and there is shaped bracing on the south side. A plate at road level on the north side is inscribed with "CAST AT PENYDARAN IRONWORKS GLAMORGANSHIRE MDCCCXXI".
Local climate
Bridge at the mouth of the Afon Ogwen (partly in Llandygai community) sits in one of the wettest parts of the UK, with an average of 1,210 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 90% of listed buildings.
It experiences an average of 37 freeze-thaw cycles a year, more than 67% of listed buildings. Of these, 19 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.
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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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