Full Report for Listed Buildings
The list description is not intended to be a complete inventory of what is listed: it is principally intended to aid identification. By law, the definition of a listed building includes the entire building (i) and any structure or object that is fixed to the said building and ancillary to it and (ii) any other structure or object that forms part of the land and has done so since before 1 July 1948, and was within the curtilage of the building, and ancillary to it, on the date on which said building was first included in the list, or on 1 January 1969, whichever was later.
Summary Description
Reference Number
21838
Building Number
Grade
II
Status
Designated
Date of Designation
28/05/1999
Date of Amendment
28/05/1999
Name of Property
Pont y Gromlech
Address
Location
Unitary Authority
Gwynedd
Community
Llanberis
Town
Locality
Pass of Llanberis
Easting
262979
Northing
356574
Street Side
Location
Spans the Afon Nant Peris in an isolated position on the A 4086 in the Pass of Llanberis about 2km south-east of Nant Peris.
Description
Broad Class
Transport
Period
History
Built in the early C19 following the creation of the turnpike road in the 1790s, the construction of the bridge helped to improve transport conditions along the Pass of Llanberis; these had previously been much criticised by travellers, including by Edmund Hyde Hall in his Description of Caernarvonshire (1809-11). The bridge is shown on the 1838 Tithe Map.
Exterior
Bridge. Roughly coursed rubblestone with stone-on-edge coping. Single segmental arch with voussoirs and arch-ring; plain square-headed floodwater arch on southern side.
Interior
Reason for designation
Listed as an early C19 bridge, built as part of the remarkable engineering work carried out at this time to improve transport and communications along the Pass of Llanberis.
Cadw : Full Report for Listed Buildings [ Records 1 of 1 ]
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