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Cof Cymru: National Historic Assets of Wales · Wales

Aqueduct over Dowlais Brook on Monmouthshire and Brecon Canal, partly in Cwmbran Central Community

Llantarnam, Torfaen, Wales

The record

Designation
Listed building, Grade II
Broad class
No class recorded
Date of designation
30 September 2003
Town
Cwmbran
Community
Llantarnam
Unitary authority
Torfaen
Country
Wales
Coordinates
51.64036, -3.02666
Cadw reference
81859

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 1636 "Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ..." (David Rumsey Map Collection, Stanford Libraries).

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This record in Cadw's own full report ↗

Cadw's description

On the Monmouthshire and Brecon Canal some 200m S of Two Locks Road in Cwmbran.

Late C18 aqueduct carrying the Monmouthshire Canal over the Dowlais Brook. The Monmouthshire Canal which was a prime factor in the industrial development of the Gwent Valleys and was built by Thomas Dadford Junior, 1792-9. The canal ran between Newport and Pontnewynydd, with a branch between Crindau and Crumlin.

Canal aqueduct over river, two tunnels of squared stone with segmental arched openings each side of canal. High stone embanking walls without parapets but with triangular piers on each side of and between tunnels. Piers have sloping tops and stop approximately 1m below top of wall. Abutments are splayed each side. Arches have stone voussoirs with raised keystones and walling is of squared stone laid in courses. River on downstream side is paved for some 6m with squared stone blocks terminating in low weir.

Included a substantial masonry feature on an important late C18 canal which was a prime factor in the industrial development of the Gwent Valleys.

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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