Bridge over Sirhowy River at Gelligroes is a Grade II listed building in the Caerphilly local planning authority area, Wales. First listed on 26 February 1988. Bridge.
Bridge over Sirhowy River at Gelligroes
- WRENN ID
- rough-newel-bracken
- Grade
- II
- Local Planning Authority
- Caerphilly
- Constituency
- Caerphilly MP: Chris Evans (Lab)
- Country
- Wales
- Date first listed
- 26 February 1988
- Type
- Bridge
- Address
- Bridge over Sirhowy River at Gelligroes, Gelli-Groes, Ynysddu
- OS grid reference
- ST 178 946
- Coordinates
- 51.64502, -3.18921
- Source
- Cadw listing
Description
The bridge over the Sirhowy River at Gelligroes is a single arch hump-backed structure made of rubble. It features very deep, thin voussoirs that form a wide elliptical arch over the river, which is supported by buttresses at river level. The bridge has parapets with flat coping stones and unequal splayed approaches made of snecked rubble, with part of the approaches stepped at ground level. The roadway is narrow.
Local climate
Bridge over Sirhowy River at Gelligroes sits in a wetter-than-average part of the UK, with an average of 1,060 mm of rain a year. This makes it wetter than 85% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 81% of listed buildings.
It experiences an average of 32 freeze-thaw cycles a year, fewer than 59% of listed buildings. Of these, 13 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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