Stony Flat Bridge (Number 87) at SD 607 227 is a Grade II listed building in the Chorley local planning authority area, England. First listed on 30 January 1987. A Regency Bridge.

Stony Flat Bridge (Number 87) at SD 607 227

WRENN ID
spare-sentry-hemlock
Grade
II
Local Planning Authority
Chorley
Constituency
Chorley MP: Sir Lindsay Hoyle (Spk)
Country
England
Date first listed
30 January 1987
Type
Bridge
Period
Regency
Address
Stony Flat Bridge (Number 87) at SD 607 227, Withnell
OS grid reference
SD 608 228
Coordinates
53.70019, -2.59519
Source
Historic England listing

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

Description

Stony Flat Bridge (Number 87) is an accommodation bridge over the Leeds-Liverpool Canal, constructed between 1812 and 1814. The supervising engineers for the project were Joseph and James Fletcher, and the contractor was John Withnall. The bridge is built from coursed sandstone and features a distorted elliptical portal with rusticated voussoirs and keystones. It has a band, a parapet with rounded coping, and pilastered ends leading to curved keepers, along with a sloped deck. The bridge crosses a cutting along the contour.

Local climate

Stony Flat Bridge (Number 87) at SD 607 227 sits in one of the wettest parts of the UK, with an average of 1,200 mm of rain a year. This makes it wetter than 91% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 87% of listed buildings.

It experiences an average of 38 freeze-thaw cycles a year, more than 73% of listed buildings. Of these, 20 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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