Canal Bridge over Monmouthshire and Brecon Canal S of Ty Sign is a Grade II listed building in the Caerphilly local planning authority area, Wales. First listed on 22 October 1999. Bridge.

Canal Bridge over Monmouthshire and Brecon Canal S of Ty Sign

WRENN ID
wild-cornice-kestrel
Grade
II
Local Planning Authority
Caerphilly
Constituency
Newport West and Islwyn MP: Ruth Jones (Lab)
Country
Wales
Date first listed
22 October 1999
Type
Bridge
Address
Canal Bridge over Monmouthshire and Brecon Canal S of Ty Sign, Pontymister, Risca
OS grid reference
ST 254 900
Coordinates
51.60428, -3.07716
Source
Cadw listing

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

Description

This is an asymmetrical hump-backed bridge made of rubble sandstone, located over the Monmouthshire and Brecon Canal south of Ty Sign. The bridge features a single elliptical arch constructed with dressed stone voussoirs and has a low parapet with flat coping. The abutments are splayed outwards and terminate in square piers. A former towpath used to pass under the bridge to the south, where there is a stone kerb. The deck is cobbled, and there are concrete repairs to the coping.

Local climate

Canal Bridge over Monmouthshire and Brecon Canal S of Ty Sign sits in a wetter-than-average part of the UK, with an average of 1,000 mm of rain a year. This makes it wetter than 80% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 77% of listed buildings.

It experiences an average of 33 freeze-thaw cycles a year, fewer than 56% of listed buildings. Of these, 13 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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  • Detailed attributes — period, style, materials, features
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