History in Structure

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Pont Ty-gwyn

A Grade II Listed Building in Pentir, Gwynedd

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Latitude: 53.1968 / 53°11'48"N

Longitude: -4.1164 / 4°6'59"W

OS Eastings: 258713

OS Northings: 368723

OS Grid: SH587687

Mapcode National: GBR 5Q.2NJM

Mapcode Global: WH547.QXZ5

Entry Name: Pont Ty-gwyn

Listing Date: 22 September 1997

Last Amended: 22 September 1997

Grade: II

Source: Cadw

Source ID: 18921

Building Class: Transport

Location: The bridge carries the High Street over the Afon Cegin at the S end of the village.

County: Gwynedd

Town: Bangor

Community: Pentir

Community: Pentir

Locality: Glasinfryn

Traditional County: Caernarfonshire

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Probably constructed in the C18 or early C19, to carry the Bangor to Tregarth road via the Cegin valley.


Built of local stone rubble. A single arched span, founded on rock on each side, where the river runs through rapids below a stone sluice, perhaps for a former mill. The arch has slightly inset voussoirs with a regulating course above. The spandrels and bowed flush parapets are coped with a sharply keeled flush coping both sides.

Reasons for Listing

Included as a very well preserved bridge in a spectacular location.

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