Tunnel at SW 762419 SW Part of the Redruth and Chasewater Railway is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 12 March 1986. Tunnel.
Tunnel at SW 762419 SW Part of the Redruth and Chasewater Railway
- WRENN ID
- burning-turret-vale
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- Camborne and Redruth MP: Perran Moon (Lab)
- Country
- England
- Date first listed
- 12 March 1986
- Type
- Tunnel
- Address
- Tunnel at SW 762419 SW Part of the Redruth and Chasewater Railway, Gwennap
- OS grid reference
- SW 761 419
- Coordinates
- 50.2349, -5.1399
- Source
- Historic England listing
Description
The tunnel at SW 762419 is part of the Redruth and Chasewater Railway, built around 1824. It serves as a passage for a stream through the railway embankment. The structure is made of Killas rubble, with dressed granite voussoirs forming the round-arched entrances on both the north and south sides. It features a single span with a taller keystone at the center of each arch, and vertical rubble walling above, flanked by battered and splayed embankment retaining walls.
The Redruth and Chasewater Railway operated from 1824 to 1915, originally transporting mineral ore to the port of Devoran. The railway was horse-drawn until 1854 when steam locomotives were introduced. This tunnel is a key element of the tall embankment that allowed the railway to cross the valley and also served as an efficient outlet for water from the Great Adit, an impressive 18th-century engineering achievement that drained mines over a large area.
Local climate
Tunnel at SW 762419 SW Part of the Redruth and Chasewater Railway receives an average of 850 mm of rain a year. This makes it wetter than 59% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 84% of listed buildings.
It experiences an average of 7 freeze-thaw cycles a year, fewer than 95% of listed buildings. Of these, 3 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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