Railway Viaduct at Ngr SW 799440 SE is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 3 February 1986. Viaduct.

Railway Viaduct at Ngr SW 799440 SE

WRENN ID
endless-cupola-cream
Grade
II
Local Planning Authority
Cornwall
Constituency
Truro and Falmouth MP: Jayne Kirkham (Lab)
Country
England
Date first listed
3 February 1986
Type
Viaduct
Address
Railway Viaduct at Ngr SW 799440 SE, Kenwyn
OS grid reference
SW 799 440
Coordinates
50.25536, -5.08873
Source
Historic England listing

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

Description

The railway viaduct, built around 1887, serves as the second replacement for The Great Western Railway. It is constructed of dressed granite, primarily with a rockfaced finish, and is brought to course. The viaduct features seven spans with round arches that spring from tapered rectangular piers. It includes an impost string and a string below the coped parapet, with refuges located at alternate bays. The structure is situated in an unspoilt wooded valley.

Local climate

Railway Viaduct at Ngr SW 799440 SE receives an average of 890 mm of rain a year. This makes it wetter than 66% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 86% of listed buildings.

It experiences an average of 6 freeze-thaw cycles a year, fewer than 96% of listed buildings. Of these, 2 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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  • 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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