Bridge on River Monnow at Trewyn Mill is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 14 December 2022. Bridge. 1 related planning application.
Bridge on River Monnow at Trewyn Mill
- WRENN ID
- deep-grate-rain
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Monmouthshire MP: Catherine Fookes (Lab)
- Country
- Wales
- Date first listed
- 14 December 2022
- Type
- Bridge
- Address
- Bridge on River Monnow at Trewyn Mill, Pandy, Crucorney, Monmouthshire, NP7 8DR
- OS grid reference
- SO 335 233
- Coordinates
- 51.90459, -2.96778
- Source
- Cadw listing
Description
The bridge on the River Monnow at Trewyn Mill is a Grade II listed structure, oriented north-south. It is constructed of sandstone rubble with ashlar dressings. The bridge features a wide central span that is flanked by horseshoe-shaped flood arches. The low parapets, which are likely rebuilt, have copings with chamfered top edges. On the west parapet, there is a square stone plaque marked ‘H.C.C. 104’ indicating Herefordshire County Council. Additionally, a circular metal plaque on the southwest parapet displays the “Brecon Beacons National Park” logo and flag. The bridge has splayed abutments to the north and narrow squared abutments to the south.
Local climate
Bridge on River Monnow at Trewyn Mill receives an average of 940 mm of rain a year. This makes it wetter than 72% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 65% of listed buildings.
It experiences an average of 49 freeze-thaw cycles a year, more than 90% of listed buildings. Of these, 25 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- No sale records on file
- Related listed building consents — 1 application
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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