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Cof Cymru: National Historic Assets of Wales · Wales

Halfway Bridge (partly in Llandygai community)

Llanllechid, Gwynedd, Wales

A Grade II listed building in Tregarth, Llanllechid, Gwynedd, designated on 9 March 2000.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Halfway Bridge (partly in Llandygai community), Llanllechid, Gwynedd, 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
9 March 2000
Locality
Tregarth
Community
Llanllechid
Unitary authority
Gwynedd
Country
Wales
Coordinates
53.19950, -4.08565
Cadw reference
22953

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 1896 map "Sheet 7. Ordnance Survey of England and Wales." (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

  • 1896 · Sheet 7. Ordnance Survey of England and Wales. (David Rumsey Map Collection, Stanford Libraries)
  • 1899 · 106 Bangor (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1899 · 106 Bangor (Outline) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)
  • 1919 · Sheet 41. Anglesey. (David Rumsey Map Collection, Stanford Libraries)

Get directions ↗

This record in Cadw's own full report ↗

Cadw's description

Spanning the Afon Ogwen on a sharp bend of the A 5 approximately 2.5km north of Bethesda near the junction with the minor road to Tregarth.

Probably built c1825 in conjunction with the turnpiking of Thonmas Telford's London to Holyhead road between 1815 and 1830. The Afon Ogwen here forms the community boundary with Llandygai.

Roughly coursed rubblestone with stone-on-edge coping to rebuilt parapet and string course. Single wide segmental arch with roughly shaped voussoirs but no arch-ring.

Included as a good early C19 road bridge of impressive single span, one of several bridges built or rebuilt as part of improving transport links in this area in the late C18 and early C19.

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
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