One-Arch Bridge is a Grade II listed building in the Pembrokeshire Coast National Park local planning authority area, Wales. First listed on 8 February 1996. Bridge.
One-Arch Bridge
- WRENN ID
- floating-gallery-flax
- Grade
- II
- Local Planning Authority
- Pembrokeshire Coast National Park
- Constituency
- Mid and South Pembrokeshire MP: Henry Tufnell (Lab)
- Country
- Wales
- Date first listed
- 8 February 1996
- Type
- Bridge
- Address
- One-Arch Bridge, Stackpole Court, Stackpole and Castlemartin
- OS grid reference
- SR 975 963
- Coordinates
- 51.62944, -4.92644
- Source
- Cadw listing
Description
The One-Arch Bridge is a Grade II listed structure featuring five sections divided by roughly-formed stepped pilasters. The outer sections are supported by land-arches, while the second and fourth sections appear solid from the foundation upwards. The central section is the stream arch, which consists of a single limestone arch with a span of approximately 12.5 meters and a deep segmental shape. The parapets of the bridge have been rebuilt. In plan, the central section has parallel parapets that are about 6 meters apart, while the other sections extend the parapets into widely splayed wings.
Local climate
One-Arch Bridge sits in a wetter-than-average part of the UK, with an average of 1,160 mm of rain a year. This makes it wetter than 89% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 98% of listed buildings.
It experiences an average of 3 freeze-thaw cycles a year, fewer than 99% of listed buildings. Of these, 1 follows 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
- 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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