SE portal of Conwy Railway Tunnel is a Grade II listed building in the Conwy local planning authority area, Wales. First listed on 30 December 2005. Tunnel portal.
SE portal of Conwy Railway Tunnel
- WRENN ID
- waning-flint-stoat
- Grade
- II
- Local Planning Authority
- Conwy
- Constituency
- Bangor Aberconwy MP: Claire Hughes (Lab)
- Country
- Wales
- Date first listed
- 30 December 2005
- Type
- Tunnel portal
- Address
- SE portal of Conwy Railway Tunnel, Walled Town
- OS grid reference
- SH 779 775
- Coordinates
- 53.28067, -3.83181
- Source
- Cadw listing
Description
The southeast portal of the Conwy Railway Tunnel is constructed from snecked rock-faced stone, featuring lighter grey tooled stone jambs and voussoirs that form a round arch. At the base of the parapet, there is a corbel table, and the parapet itself includes two light-grey freestone bands, although these are mostly hidden by vegetation. The parapet is stepped and topped with saddleback copings.
Local climate
SE portal of Conwy Railway Tunnel sits in a wetter-than-average part of the UK, with an average of 1,100 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 76% of listed buildings.
It experiences an average of 34 freeze-thaw cycles a year, fewer than 51% of listed buildings. Of these, 18 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
- 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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