Heol Gerrig Bridge ( Canal Bridge no 92 ) is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 15 March 1996. Bridge.

Heol Gerrig Bridge ( Canal Bridge no 92 )

WRENN ID
crumbling-tin-fern
Grade
II
Local Planning Authority
Brecon Beacons National Park
Constituency
Monmouthshire MP: Catherine Fookes (Lab)
Country
Wales
Date first listed
15 March 1996
Type
Bridge
Address
Heol Gerrig Bridge ( Canal Bridge no 92 ), Llanellen, Llanfoist Fawr, Monmouthshire
OS grid reference
SO 296 109
Coordinates
51.79284, -3.02127
Source
Cadw listing

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

Description

Heol Gerrig Bridge, also known as Canal Bridge No 92, was built between 1809 and 1812 as part of the Brecknock and Abergavenny Canal, which was initiated in 1792 to connect the upper Usk valley to the Monmouthshire Canal. The canal was significant for transporting goods such as iron, lime, and coal. This bridge is made of coursed rubble and spans the canal and the tow-path to the east. It features a segmental arch with a keystone, and the parapet curves at the downhill end. Heol Gerrig Bridge is notable as one of the few surviving early 19th-century bridges of the Brecknock and Abergavenny Canal.

Local climate

Heol Gerrig Bridge ( Canal Bridge no 92 ) receives an average of 960 mm of rain a year. This makes it wetter than 74% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 71% of listed buildings.

It experiences an average of 45 freeze-thaw cycles a year, more than 86% of listed buildings. Of these, 22 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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  5. Embanked Aqueduct to south-east of Canal Bridge No 94 Grade II 858 m
  6. Llanellen Bridge Grade II 897 m
  7. Llanellen Bridge (partly in Llanfoist Fawr community) Grade II 913 m
  8. Oak Cottage Grade II 1.1 km
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