Llwynderi Bridge is a Grade II listed building in the Monmouthshire local planning authority area, Wales. First listed on 27 October 2000. Bridge.

Llwynderi Bridge

WRENN ID
upper-steel-vetch
Grade
II
Local Planning Authority
Monmouthshire
Constituency
Monmouthshire MP: Catherine Fookes (Lab)
Country
Wales
Date first listed
27 October 2000
Type
Bridge
Address
Llwynderi Bridge, Llantilio Crossenny, Abergavenny, Llanarth
OS grid reference
SO 385 131
Coordinates
51.81395, -2.89349
Source
Cadw listing

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

Description

Llwynderi Bridge is a Grade II listed structure made of rubble stone with ashlar dressings. It features a large central segmental arch with an approximate span of 10 meters, flanked by two smaller segmental arches on each bank, each with an approximate span of 2 meters. The arches are constructed with dressed stone voussoirs and keystones that display an incised herringbone pattern. The bridge has a low parapet wall topped with flat coping slabs. The abutments are slightly splayed, and there are raking buttresses on each side of the outer arches.

Local climate

Llwynderi Bridge receives an average of 890 mm of rain a year. This makes it wetter than 66% 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 43 freeze-thaw cycles a year, more than 84% of listed buildings. Of these, 20 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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  • 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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  4. Great Killough Grade II* 839 m
  5. Cider House, Cartshed and Stable Block at Great Bottom Farm Grade II 1.2 km
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  10. Former Llantilio Estate Laundry at Llewyncelyn Grade II 1.6 km