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Cof Cymru: National Historic Assets of Wales · Wales

Nant Du Aqueduct on Swansea Canal (partly in Pontardawe community)

Ystalyfera, Neath Port Talbot, Wales

The record

Designation
Listed building, Grade II
Broad class
Transport
Date of designation
20 December 2002
Locality
Ynysmeudwy
Community
Ystalyfera
Unitary authority
Neath Port Talbot
Country
Wales
Coordinates
51.73649, -3.82430
Cadw reference
80811

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

Situated approximately 60m SE of the Cwm Du bridge carrying the A4067 over the canal.

Late C18 aqueduct carrying Swansea Canal over Nant Du. The 16-mile Swansea Canal was opened in 1798 to Hen Neuadd, Abercraf, declined after the railway opened in 1852 and closed in 1931.

Small aqueduct on NE-SW axis. Squared stone with voussoirs to a segmental arch of some 0.6 metres in height and of 4.1 metres span.

Included for its group value with Ynysmeudwy Uchaf Bridge and the Cwmddu outfall and overflow sluice.

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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