Roman Bridge

Bro Machno, Conwy, Wales

A Grade II listed building in Penmachno Mill, Bro Machno, Conwy, designated on 13 October 1966.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Roman Bridge, Bro Machno, Conwy, with a pin at the register's coordinates — Ordnance Survey six-inch map, 2nd edition (1888–1913), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Designation: Listed building, Grade II
Broad class: Transport
Date of designation: 13 October 1966
Locality: Penmachno Mill
Community: Bro Machno
Unitary authority: Conwy
Country: Wales
Coordinates: 53.06015, -3.78198
Cadw reference: 3573

TodayHistorical map

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

5 historical maps cover this location, the earliest the 1608 map "(13) Cambriae Typus." (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

1608 · (13) Cambriae Typus. (David Rumsey Map Collection, Stanford Libraries)
1795 · To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most… (Llyfrgell Genedlaethol Cymru – The National Library of Wales)
1830 · V.3:11-15:XV. Britisches Reich. A. Kon: England. b. Frstenthum Wales: Shire: 37-40 (David Rumsey Map Collection, Stanford Libraries)
1883 · Watershed map England, Wales 3. (David Rumsey Map Collection, Stanford Libraries)
1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)

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This record in Cadw's own full report ↗

Cadw's description

Location

Spanning Afon Machno to NE of Pont-y-Pandy road bridge and Penmachno woollen mill.

History

Probably C17. Possibly identifiable with 'Pontrhydgynon', referred to in 1662 General Sessions report as an 'ancient bridge', but said by Gethin Jones to have formerly born datestone '1680'.

Exterior

Picturesque single-arched rubble masonry bridge, span c8 metres width c3 metres. Vertical abutments of flat slabs with splayed sides. Upper masonry removed down to arch ring. Some cobbles remain on decking.

Reason for designation

Scheduled Monument Cadw Ref No 4/1830/Cn 189.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0

All Transport in Conwy All Unitary authority Conwy records All Wales Heritage registers Historical markers (US)National Register of Historic Places (US)

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