Viaduct Opposite Trewerry Mill is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 16 November 1988. Viaduct.
Viaduct Opposite Trewerry Mill
- WRENN ID
- moated-window-grain
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- Truro and Falmouth MP: Jayne Kirkham (Lab)
- Country
- England
- Date first listed
- 16 November 1988
- Type
- Viaduct
- Address
- Viaduct Opposite Trewerry Mill, St. Newlyn East
- OS grid reference
- SW 837 580
- Coordinates
- 50.38247, -5.04384
- Source
- Historic England listing
Description
The viaduct opposite Trewerry Mill is a railway structure built in 1840 and altered around 1890 by Treffry. It was designed to carry the East Wheal Rose to Newquay branch railway over the River Lappa, a tributary of the River Gannel. The viaduct is constructed from rock-faced killas with copings made of St Austell granite. It features two skew segmental culvert arches supported by a central cutwater, with wing walls on the upstream side. The structure has a flush parapet, and the rear face is made of granite, with the arches consisting of three half-brick rings laid to skew, creating a dog-toothed effect.
Local climate
Viaduct Opposite Trewerry Mill receives an average of 910 mm of rain a year. This makes it wetter than 69% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 85% of listed buildings.
It experiences an average of 8 freeze-thaw cycles a year, fewer than 93% 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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