Pont y Garth (partly in Llanfihangel y Pennant Community) is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 17 June 1966. Bridge.

Pont y Garth (partly in Llanfihangel y Pennant Community)

WRENN ID
solitary-kitchen-scarlet
Grade
II
Local Planning Authority
Snowdonia National Park
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
17 June 1966
Type
Bridge
Address
Pont y Garth (partly in Llanfihangel y Pennant Community), Llanegryn, Gwynedd
OS grid reference
SH 635 070
Coordinates
52.64423, -4.01774
Source
Cadw listing

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

Description

Pont y Garth is a bridge built of local rubble stone. It features two segmental shallow arches that span onto one large water pier. Each arch consists of 50 cm radial voussoirs that are set back under a projecting regulating course, with flush spandrels and a 50 cm parapet that rises to a flush set horizontal slab coping. The water pier is pointed upstream and has three upper rounded set-backs, all of which are rendered, along with the soffit of the bridge. The water pier extends as a tail between concrete walls. The arches reach a height of 2.75 meters above the water and each spans 4.9 meters, supporting a carriageway that is 4.58 meters wide. There is a small refuge in the west parapet.

Local climate

Pont y Garth (partly in Llanfihangel y Pennant Community) sits in one of the wettest parts of the UK, with an average of 1,360 mm of rain a year. This makes it wetter than 96% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 94% of listed buildings.

It experiences an average of 25 freeze-thaw cycles a year, fewer than 73% of listed buildings. Of these, 10 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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