Milestone on A487 is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 18 April 1997. Milestone.

Milestone on A487

WRENN ID
twisted-bailey-magpie
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
18 April 1997
Type
Milestone
Address
Milestone on A487, Llanfair-Is-Gaer, Caernarvon, Y Felinheli
OS grid reference
SH 500 653
Coordinates
53.16448, -4.24396
Source
Cadw listing

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

Description

This is a slate milestone set into a stone wall along the A487. It measures approximately 40 centimeters wide and 50 centimeters high. The inscription on the milestone reads "CAERNARVON 2 - MS BANGOR 7 - MS".

Local climate

Milestone on A487 sits in one of the wettest parts of the UK, with an average of 1,210 mm of rain a year. This makes it wetter than 92% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 93% of listed buildings.

It experiences an average of 23 freeze-thaw cycles a year, fewer than 75% of listed buildings. Of these, 11 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
  • No sale records on file
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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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