Porthkerry Railway Viaduct (partly in the Barry community) is a Grade II listed building in the Vale of Glamorgan local planning authority area, Wales. First listed on 28 January 1963. Viaduct.
Porthkerry Railway Viaduct (partly in the Barry community)
- WRENN ID
- calm-brass-honey
- Grade
- II
- Local Planning Authority
- Vale of Glamorgan
- Constituency
- Vale of Glamorgan MP: Kanishka Narayan (Lab)
- Country
- Wales
- Date first listed
- 28 January 1963
- Type
- Viaduct
- Address
- Porthkerry Railway Viaduct (partly in the Barry community), Rhoose
- OS grid reference
- ST 083 668
- Coordinates
- 51.39307, -3.31845
- Source
- Cadw listing
Description
The Porthkerry Railway Viaduct, located partly in the Barry community, is a notable structure built with coursed quarry-faced grey stone and features brick arch rings. It has sixteen semi-circular arches of irregular spans, supported by tall tapering stone piers that have plinths of varying heights. The brick arches reach a maximum height of approximately 30 metres. Above every second pier, there is a stone parapet with corbelled refuges. The viaduct spans the steep valley of the stream that forms the eastern boundary of the Rhoose Community.
Local climate
Porthkerry Railway Viaduct (partly in the Barry community) sits in a wetter-than-average part of the UK, with an average of 1,090 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 92% of listed buildings.
It experiences an average of 17 freeze-thaw cycles a year, fewer than 83% of listed buildings. Of these, 6 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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- Porthkerry Railway Viaduct (partly in the community of Rhoose)
- Outbuilding to north of Church Farmhouse
- Church Farmhouse (aka Glebe Farm)
- Church of St Curig
- Cross in the Churchyard of the Church of St Curig
- The Old School House
- Upper Porthkerry Farmhouse
- Lower Porthkerry Farmhouse
- The Coachhouse, Cwm-cidy Farm
- Ty-crwn, Cwm-cidy Farm