Carreghofa Aqueduct parallel to the Public Road 700m West of Llanymynech is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 5 April 1993. Chapel. 2 related planning applications.

Carreghofa Aqueduct parallel to the Public Road 700m West of Llanymynech

WRENN ID
silver-hearth-khaki
Grade
II
Local Planning Authority
Powys
Constituency
Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
Country
Wales
Date first listed
5 April 1993
Type
Chapel
Address
Carreghofa Aqueduct parallel to the Public Road 700m West of Llanymynech, Wern, SY22 6PA
OS grid reference
SJ 259 206
Coordinates
52.77867, -3.09937
Source
Cadw listing

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

Description

The Carreghofa Aqueduct, built to carry a canal, is located parallel to the Public Road, 700 meters west of Llanymynech. It features a riveted metal-plated trough with canted sides, which is supported by timber-capped longitudinal girders that have triangular braces. Beneath the trough, there are trabeated cast-iron supports that run down the center of the former double trackway. These supports include single and paired uprights with cross-brackets and flanged bases that are bolted to masonry piers.

The aqueduct has a splayed bull-faced masonry abutment with a ramped outer wall topped with stone cappings. A vertical joint separates the aqueduct from the brickwork of the adjacent road bridge. To the north, there are remnants of the canal approaches to a temporary aqueduct that was dismantled after the construction works were completed.

Local climate

Carreghofa Aqueduct parallel to the Public Road 700m West of Llanymynech receives an average of 850 mm of rain a year. This makes it wetter than 58% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 66% of listed buildings.

It experiences an average of 41 freeze-thaw cycles a year, more than 78% of listed buildings. Of these, 22 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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  • No EPC on record for this property
  • Sale history — 2 transactions since 1995
  • 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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