History in Structure

Bridge over River Monnow approximately 50m south of Allt-Yr-Ynys

A Grade II Listed Building in Walterstone, County of Herefordshire

Approximate Location Map
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Coordinates

Latitude: 51.9047 / 51°54'16"N

Longitude: -2.9678 / 2°58'4"W

OS Eastings: 333514

OS Northings: 223346

OS Grid: SO335233

Mapcode National: GBR F7.Q4H8

Mapcode Global: VH78V.HDX7

Plus Code: 9C3VW23J+VV

Entry Name: Bridge over River Monnow approximately 50m south of Allt-Yr-Ynys

Listing Date: 14 March 1986

Last Amended: 20 February 2026

Grade: II

Source: Historic England

Source ID: 1078162

English Heritage Legacy ID: 355414

ID on this website: 101078162

Location: County of Herefordshire, HR2

County: County of Herefordshire

Civil Parish: Walterstone

Traditional County: Monmouthshire

Lieutenancy Area (Ceremonial County): Herefordshire

Church of England Parish: Walterstone

Church of England Diocese: Hereford

Tagged with: Bridge

Summary


An 1843 stone bridge over the River Monnow, altered in 1945.

Description


An 1843 stone bridge over the River Monnow, altered in 1945.

MATERIALS: sandstone.

DESCRIPTION: rectangular with splayed abutments, orientated with narrow ends roughly to the north and south. The bridge has a large, central span formed of a segmental arch formed of a single course of ashlar blocks flanked by horseshoe shaped flood arches of smaller ashlar blocks. The spandrels between arches and the parapet are in rubble brought to course, with coping stones to the parapets. Both northern abutments are splayed out from the side of the road. There is a circular metal Brecon Beacons National Park plaque bearing that organisation’s flag and logo on the west face of the eastern parapet at the north end of the bridge. A square stone tablet inscribed ‘H.C.C. / 104’ (Herefordshire County Council) on the east side of the west parapet.

History


A bridge over the River Monnow at Allt Yr Ynys on the border between Monmouthshire in Wales and Herefordshire in England is mentioned in ‘An Historical Tour in Monmouthshire’ by William Coxe (1748-1828), published in 1801. This bridge was timber, and likely to date from after the turnpiking of the road in the second half of the C18. By 1809 the timber bridge required renewal, and the work was carried out under John Gethin (1757-1831), Surveyor of the County Bridges for Herefordshire. This would have been the bridge shown on the 1841 tithe map of Walterstone. The 1809 timber bridge was rebuilt in stone in 1843. Plans from 1945 show proposed works to the bridge which reflect its current appearance. Repair work and repointing to the bridge was carried out in March 2021.

Reasons for Listing


The bridge over the River Monnow. approximately 50m south of Allt-Yr-Ynys. is listed at Grade II for the following principal reasons:

Architectural interest:

* the bridge is solidly designed and is well made, in a modest and functional style fitting for its rural location.

Historic interest:

* the border between England and Wales falls in the centre of this river crossing, and the bridge illustrates the history of this route connecting market towns either side of the border;
* the changes made over time illustrate how the responsible local authorities have invested in the bridge by rebuilding in stone and adapting it to allow use by heavier motorised vehicles.

External Links

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