Stow Hill Railway Tunnel is a Grade II listed building in the Newport local planning authority area, Wales. First listed on 31 March 2000. Tunnel. 2 related planning applications.

Stow Hill Railway Tunnel

WRENN ID
eternal-chamber-fern
Grade
II
Local Planning Authority
Newport
Constituency
Newport East MP: Jessica Morden (Lab)
Country
Wales
Date first listed
31 March 2000
Type
Tunnel
OS grid reference
ST 305 875
Coordinates
51.58275, -3.00444
Source
Cadw listing

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

Description

Stow Hill Railway Tunnel is the easterly of the two tunnels located under Stow Hill. It extends from a point approximately 450 meters southwest of Newport Station, just north of Windsor Terrace, for about 650 meters, emerging roughly 150 meters northwest of Llandaff Street. The northern and southern portals feature round-headed arches made of heavily rock-faced voussoirs, reflecting the influence of 16th-century Italian architecture. The tunnel is constructed with coursed rock-faced masonry.

Inside, the tunnel is faced in stone, with repairs made using sprayed concrete in 1987.

Local climate

Stow Hill Railway Tunnel receives an average of 930 mm of rain a year. This makes it wetter than 71% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 72% of listed buildings.

It experiences an average of 35 freeze-thaw cycles a year, more than 55% of listed buildings. Of these, 14 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • No sale records on file
  • Related listed building consents — 2 applications
  • 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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