Railway viaduct N of Llwyn Einon is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 30 October 2000. Viaduct.
Railway viaduct N of Llwyn Einon
- WRENN ID
- strange-plaster-myrtle
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 30 October 2000
- Type
- Viaduct
- Address
- Railway viaduct N of Llwyn Einon, Garth, Llangamarch
- OS grid reference
- SN 943 485
- Coordinates
- 52.12483, -3.54475
- Source
- Cadw listing
Description
The railway viaduct north of Llwyn Einon is a skewed structure featuring three bays. It is built with snecked rock-faced shale piers and abutments, supported by iron girders that hold up the deck, which is topped with a brick parapet. The piers have wider bases with pointed cutwaters and are extended on the south side to support an additional track. The abutments are also extended on the south side, curving outwards and downwards, and are finished with rock-faced copings. The piers are capped with freestone just below the deck. The deck itself is made of girders, and the parapets include shallow terminal and intermediate piers with brick copings, while the terminal piers feature coarse concrete saddleback copings.
Local climate
Railway viaduct N of Llwyn Einon sits in a wetter-than-average part of the UK, with an average of 1,140 mm of rain a year. This makes it wetter than 89% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 79% of listed buildings.
It experiences an average of 46 freeze-thaw cycles a year, more than 87% of listed buildings. Of these, 26 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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