Pont Mwnwgl-y-llyn is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 20 October 1966. Church.

Pont Mwnwgl-y-llyn

WRENN ID
far-spandrel-autumn
Grade
II
Local Planning Authority
Snowdonia National Park
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
20 October 1966
Type
Church
Address
Pont Mwnwgl-y-llyn, Llangywer, Gwynedd
OS grid reference
SH 929 350
Coordinates
52.90239, -3.59278
Source
Cadw listing

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

Description

Pont Mwnwgl-y-llyn is a large road bridge constructed from coursed and squared local stone. It features three spans supported by segmental arches and has angled cutwaters on both sides. The bridge has a plain parapet topped with stone slab coping, which sits above a continuous dripcourse.

Local climate

Pont Mwnwgl-y-llyn sits in one of the wettest parts of the UK, with an average of 1,190 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 80% of listed buildings.

It experiences an average of 53 freeze-thaw cycles a year, more than 94% of listed buildings. Of these, 33 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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