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Cof Cymru: National Historic Assets of Wales · Wales

Pont Penprys

Llannor, Gwynedd, Wales

The record

Designation
Listed building, Grade II
Broad class
Transport
Date of designation
19 October 1971
Locality
Pentreuchaf
Town
Pwllheli
Community
Llannor
Unitary authority
Gwynedd
Country
Wales
Coordinates
52.92866, -4.45766
Cadw reference
4330

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

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1830 "V.3:11-15:XV. Britisches Reich. A. Kon: England. b. Frstenthum Wales: Shire: 37-40" (David Rumsey Map Collection, Stanford Libraries).

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This record in Cadw's own full report ↗

Cadw's description

The bridge lies c900m NNW of Pentreuchaf, and carries the road from Y Ffor W over the Afon Llannor.

The bridge was probably built c1800 for the turnpike trust, as part of the general improvements to county roads being carried out in the late C18 and early C19.

The bridge is part of a short raised causeway carrying the road over a narrow section of the Llannor valley. A single segmental arch spanning c4.65m formed with inset rubble voussoirs below a regulating course, rising 2.2m above the river, flush rubble spandrels and undifferentiated parapet with large coping stones. The carriageway is 4.6m wide, approximately level, and has parapets 45cm thick, turning out at the ends.

Included as a good example of a late C18 or early C19 road bridge.

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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