Milestone on A30 Slip Road to Lewannick (Ngr Sx2668881285) is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 5 June 2007. Milestone.

Milestone on A30 Slip Road to Lewannick (Ngr Sx2668881285)

WRENN ID
silver-nave-evening
Grade
II
Local Planning Authority
Cornwall
Constituency
North Cornwall MP: Ben Maguire (LD)
Country
England
Date first listed
5 June 2007
Type
Milestone
OS grid reference
SX 266 812
Coordinates
50.60547, -4.45066
Source
Historic England listing

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

Description

This is an early to mid 19th-century milestone made of local granite, located on the A30 slip road to Lewannick. It has a monumental shape with a shallow pointed head. The lettering and numbering are carved into the stone and painted black, indicating distances to Launceston (5 miles) and Bodmin (17 miles).

The milestone was erected by the Bodmin Turnpike Trust during the early to mid 19th century. The original Turnpike route connected Five Lanes, running north on Newhay, via Polyphant to Holloway Cross (now Holyway Cross), with milestones marking distances of 14, 15, 16, and 17 miles from Bodmin.

Milestones like this one are important as they are among the few physical remnants of historic road use, reflecting the standardization of roads and the establishment of turnpikes to support the growing commercial and industrial activities in 18th-century Cornwall. This milestone is one of several carved stone milestones that mark the turnpike route between Launceston and Bodmin. It remains intact and in its original location, contributing to its group value with other milestones along this route.

Local climate

Milestone on A30 Slip Road to Lewannick (Ngr Sx2668881285) 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 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 86% 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.

More on this building

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  2. Bridge Over Penpont Water to South of Polyphant Grade II 777 m
  3. Woodland Cottage Grade II 786 m
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  5. Darkes Farmhouse Grade II 833 m
  6. Coombe Farmhouse Grade II 844 m
  7. Gateway Arch Immediately South East of Tolpetherwin Farmhouse Grade II 879 m
  8. Tolpetherwin Farmhouse Grade II 882 m
  9. K6 Telephone Kiosk on Polyphant Green to North West of Combe Farm Grade II 885 m
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