Penadlake Viaduct is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 30 April 1985. Railway viaduct.

Penadlake Viaduct

WRENN ID
forgotten-nave-wind
Grade
II
Local Planning Authority
Cornwall
Constituency
South East Cornwall MP: Anna Gelderd (Lab)
Country
England
Date first listed
30 April 1985
Type
Railway viaduct
Address
Penadlake Viaduct, Braddock
OS grid reference
SX 135 649
Coordinates
50.4551, -4.62794
Source
Historic England listing

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

Description

Penadlake Viaduct is a railway viaduct built in 1877 to replace Isambard Kingdom Brunel's earlier tresselled timber viaduct that opened in 1859. The structure features seven tapering piers made of massive snecked rock-faced slatestone, with a clear span of approximately 40 feet. It carries eight semicircular arches, which are constructed with dressed rusticated granite voussoirs and quoins. The parapet has been partly rebuilt and includes rusticated stone coping with simple refuges. The viaduct is slightly curved in plan and is part of a series of viaducts built in quick succession along Brunel's Plymouth to Truro Cornwall Railway broad gauge line. The railway line itself was opened in 1859.

Local climate

Penadlake Viaduct sits in a wetter-than-average part of the UK, with an average of 1,030 mm of rain a year. This makes it wetter than 82% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 87% of listed buildings.

It experiences an average of 16 freeze-thaw cycles a year, fewer than 84% of listed buildings. Of these, 7 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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