Garden Bridge is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 31 January 1997. Bridge.
Garden Bridge
- WRENN ID
- solitary-screen-dale
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 31 January 1997
- Type
- Bridge
- Address
- Garden Bridge, Gregynog, Tregynon
- OS grid reference
- SO 084 974
- Coordinates
- 52.56677, -3.35144
- Source
- Cadw listing
Description
The Garden Bridge is a single arch bridge constructed with unreinforced concrete and a rubble core. It features a parapet with splayed ends and piers, to which figurines were added later. The concrete is made from a very coarse aggregate of river-borne pebbles and large brick fragments, chosen for their color effect. Beneath the arch, the concrete was laid between five courses of shuttering, which still show visible putlog holes. The tunnel vault is made from a finer aggregate and bears impressions from the boards of the arch former. The parapet is mostly modern, made of fine concrete.
Local climate
Garden Bridge 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 77% of listed buildings.
It experiences an average of 43 freeze-thaw cycles a year, more than 81% of listed buildings. Of these, 23 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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