Masons Bridge, Drumnaconagher Road, Drumnaconagher / Raleagh, Ballynahinch, Co Down is a Grade B1 listed building in the Newry, Mourne and Down local planning authority area, Northern Ireland. First listed on 27 May 1980.

Masons Bridge, Drumnaconagher Road, Drumnaconagher / Raleagh, Ballynahinch, Co Down

WRENN ID
former-keystone-sienna
Grade
B1
Local Planning Authority
Newry, Mourne and Down
Constituency
Strangford MP: Jim Shannon (DUP)
Country
Northern Ireland
Date first listed
27 May 1980
Irish grid reference
J 405 513
Coordinates
54.39168, -5.8364
Source
NI Environment Agency listing

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

Description

This is a small, rubble-built, two-arch road bridge located on the Drumnaconagher Road, crossing the Ballynahinch River, approximately 2.5 miles east of Ballynahinch. The bridge’s construction is likely to predate 1834, though the regularity of the arches may suggest a slightly later date. It is of group value for its age, style, proportion, detail, and overall character. The bridge is primarily constructed of random fieldstone rubble, featuring two roughly elliptical arches with granite voussoirs and piers between. A cutwater is present on the south side, and the parapet is topped with rough rubble coping. Metal ties have been inserted into the structure, and the road surface is covered in tarmac. A bridge is depicted on an Ordnance Survey map of 1834, and identified as ‘Masons Bridge’ on a revised map from 1858. While it’s possible the current structure largely dates to 1834, precise dating is difficult. The bridge exhibits industrial archaeological interest and holds local historical significance.

Local climate

Masons Bridge, Drumnaconagher Road, Drumnaconagher / Raleagh, Ballynahinch, Co Down receives an average of 920 mm of rain a year. This makes it wetter than 70% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 73% of listed buildings.

It experiences an average of 7 freeze-thaw cycles a year, fewer than 95% of listed buildings. Of these, 4 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.2°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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  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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