Mile marker at Cilthriew is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 12 September 1996. House.

Mile marker at Cilthriew

WRENN ID
half-clay-ochre
Grade
II
Local Planning Authority
Powys
Constituency
Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
Country
Wales
Date first listed
12 September 1996
Type
House
Address
Mile marker at Cilthriew, Pentre, Newtown, Kerry
OS grid reference
SO 157 886
Coordinates
52.48892, -3.24186
Source
Cadw listing

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

Description

The mile marker at Cilthriew is a cast iron structure dating from around 1830. It was established by the Turnpike Trust on a newly engineered section of road, which is still known as the 'turnpike', to help with the steep gradients leading to Kerry Pole, which is 463 meters high. The marker has a triangular shape and features a sloping top against a half-round backplate, although this backplate is now missing. The raised lettering on the marker indicates distances: on the left side, it reads "ANCHOR 4 - M / KNIGHTON 17 - M," and on the right side, it states "KERRY / 1½ - M / NEWTOWN / 4½ - M," with arrows pointing in the correct directions.

Local climate

Mile marker at Cilthriew receives an average of 930 mm of rain a year. This makes it wetter than 71% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 63% of listed buildings.

It experiences an average of 49 freeze-thaw cycles a year, more than 91% of listed buildings. Of these, 28 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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