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Pont Factory

A Grade II Listed Building in Llanllyfni, Gwynedd

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Latitude: 53.0477 / 53°2'51"N

Longitude: -4.282 / 4°16'55"W

OS Eastings: 247129

OS Northings: 352485

OS Grid: SH471524

Mapcode National: GBR 5H.D49Z

Mapcode Global: WH43T.6N7D

Entry Name: Pont Factory

Listing Date: 21 July 2000

Last Amended: 21 July 2000

Grade: II

Source: Cadw

Source ID: 23712

Building Class: Transport

Location: Road bridge and causeway on the A 487, spanning the Afon Lyni, between Llanllyfni and Penygroes.

County: Gwynedd

Community: Llanllyfni

Community: Llanllyfni

Traditional County: Caernarfonshire

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Shown on the 1840 Tithe Map, the bridge forms part of the establishment of the turnpike road by the improving landlords of the Bryncir Estate in the 1820s.


Roughly coursed rubblestone with saddleback coping to long abutments forming a raised causeway to north and south. The bridge itself is of regularly coursed blocks with piers, coped parapet and string course above a single-span segmental arch over the river, faced with rough-dressed voussoirs and keystone below a plain arch ring.

Reasons for Listing

Included as a very fine early C19 bridge on the former turnpike road.

Other nearby listed buildings

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