Pont Llanerch Emrys (Partly in the Community of Llansantffraid) is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 4 January 1966. Bridge.

Pont Llanerch Emrys (Partly in the Community of Llansantffraid)

WRENN ID
north-cupola-heron
Grade
II
Local Planning Authority
Powys
Constituency
Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
Country
Wales
Date first listed
4 January 1966
Type
Bridge
Address
Pont Llanerch Emrys (Partly in the Community of Llansantffraid), Pen-Y-Bont Llanerch Emrys, Llangedwyn
OS grid reference
SJ 211 236
Coordinates
52.80433, -3.17166
Source
Cadw listing

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

Description

Pont Llanerch Emrys is a bridge of high segmental form, spanning approximately 18 meters. It is built from uncoursed common masonry, featuring rusticated, even-height voussoirs. A prominent keystone hangs from a string course at the base of the parapet, which is similar on both sides.

The carriageway of the bridge is about 6 meters wide, flanked by narrow two-course scappled sandstone parapets that turn out at all four ends to small stone piers. Parts of the parapets have bronze coping cramps. An unusual feature of the bridge is that many of the stones in the parapets are numbered sequentially with Roman numerals, indicating that the parapets were constructed from the apex of the bridge outwards.

Local climate

Pont Llanerch Emrys (Partly in the Community of Llansantffraid) receives an average of 890 mm of rain a year. This makes it wetter than 66% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 56% of listed buildings.

It experiences an average of 43 freeze-thaw cycles a year, more than 84% of listed buildings. Of these, 24 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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