Bridge at Dan-y-bont Mill is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 27 July 2000. Bridge.

Bridge at Dan-y-bont Mill

WRENN ID
over-entrance-wax
Grade
II
Local Planning Authority
Brecon Beacons National Park
Constituency
Monmouthshire MP: Catherine Fookes (Lab)
Country
Wales
Date first listed
27 July 2000
Type
Bridge
Address
Bridge at Dan-y-bont Mill, Gilwern, Llanelly, Monmouthshire
OS grid reference
SO 245 145
Coordinates
51.82483, -3.09627
Source
Cadw listing

Also on this page: sale history · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The bridge at Dan-y-bont Mill is a Grade II listed structure made of coursed sandstone. It features a single arch with a segmental design, spanning approximately 20 feet (6 metres). The arch is constructed with stone voussoirs. On the eastern side, there is a drip mould, and the arch is slightly recessed behind the line of stone cheeks, with a pilaster strip to the left. The western arch is also recessed but lacks a drip mould, instead having a stringcourse above and a pilaster to the left. The bridge has low parapets that have been extensively patched, retaining some stone slab copings on the northwest and southeast sides. The parapet curves to the northwest to connect with the boundary wall of the former mill, while the northeast parapet curves to follow the road line, serving as a retaining wall.

Local climate

Bridge at Dan-y-bont Mill sits in a wetter-than-average part of the UK, with an average of 1,040 mm of rain a year. This makes it wetter than 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 75% of listed buildings.

It experiences an average of 48 freeze-thaw cycles a year, more than 89% of listed buildings. Of these, 24 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
  • Sale history — 3 transactions since 1997
  • 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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