NW 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. Portal.
NW portal of Conwy Railway Tunnel
- WRENN ID
- western-landing-barley
- Grade
- II
- Local Planning Authority
- Conwy
- Constituency
- Bangor Aberconwy MP: Claire Hughes (Lab)
- Country
- Wales
- Date first listed
- 30 December 2005
- Type
- Portal
- Address
- NW portal of Conwy Railway Tunnel, Mount Pleasant
- OS grid reference
- SH 779 775
- Coordinates
- 53.28112, -3.83248
- Source
- Cadw listing
Description
The northwest portal of the Conwy Railway Tunnel is constructed from snecked rock-faced stone and spans a deep cutting. It features flanking battered buttresses. Above the round arch, there is a corbel table and a parapet, which has a saddleback coping made of tooled stone. The parapet is splayed towards the southern bank, where there is a rectangular terminal pier topped with a rock-faced cap, although this was partly overgrown during the survey. A similar pier is located on the northern side, but it was obscured by vegetation at the time of inspection.
Local climate
NW 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.
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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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