Grand Union Canal Bridge Number 2 (Gamnel Bridge) at Tringford Road is a Grade II listed building in the Dacorum local planning authority area, England. First listed on 29 May 1986. Bridge. 2 related planning applications.

Grand Union Canal Bridge Number 2 (Gamnel Bridge) at Tringford Road

WRENN ID
buried-timber-wax
Grade
II
Local Planning Authority
Dacorum
Constituency
Harpenden and Berkhamsted MP: Victoria Collins (LD)
Country
England
Date first listed
29 May 1986
Type
Bridge
Address
Grand Union Canal Bridge Number 2 (Gamnel Bridge) at Tringford Road, HP23 4JJ
OS grid reference
SP 924 131
Coordinates
51.80913, -0.66105
Source
Historic England listing

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

Description

Gamnel Bridge, also known as Bridge Number 2, is a canal crossover and road bridge located at Tringford Road, built around 1797 by William Jessop, who was the chief engineer for the Grand Junction Canal Company. The bridge is constructed of brown brick, featuring a red brick arch and a blue brick band at the base of the parapet, along with special blue brick copings. It is a narrow, hump-backed bridge with a tall, three-centred arched span and battered sides. There are rectangular metal tie-plates positioned over the arch. Notably, there is no towpath at this location, as the towpath crosses from the south to the north side of the canal at this bridge.

Local climate

Grand Union Canal Bridge Number 2 (Gamnel Bridge) at Tringford Road sits in a drier-than-average part of the UK, with an average of 740 mm of rain a year. This makes it drier than 76% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 81% of listed buildings.

It experiences an average of 37 freeze-thaw cycles a year, more than 69% of listed buildings. Of these, 17 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
  • Related listed building consents — 2 applications
  • 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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