Latitude: 51.6789 / 51°40'43"N
Longitude: -3.7765 / 3°46'35"W
OS Eastings: 277269
OS Northings: 199281
OS Grid: SS772992
Mapcode National: GBR H4.5DSF
Mapcode Global: VH5GN.H2CB
Plus Code: 9C3RM6HF+GC
Entry Name: Aberdulais Aqueduct (partly in Tonna community)
Listing Date: 29 January 1980
Last Amended: 26 November 2003
Grade: II*
Source: Cadw
Source ID: 11838
Building Class: Water Supply and Drainage
ID on this website: 300011838
Location: Spanning the Afon Nedd W of Aberdulais Basin and approximately 0.4km N of Tonna church.
County: Neath Port Talbot
Town: Neath
Community: Blaenhonddan
Community: Blaenhonddan
Locality: Aberdulais
Built-Up Area: Neath
Traditional County: Glamorgan
Tagged with: Aqueduct
The Tennant Canal, engineered by William Kirkhouse, was begun in 1821 and the aqueduct across the River Neath at Aberdulais was begun in 1823. The canal opened in 1824 from the Neath Canal at Aberdulais to Port Tennant, Swansea. Traffic declined from the 1860s due to competition with railways but the canal did not close to commercial traffic until 1934.
Canal aqueduct, 10 bay, of coursed rubble stone, with dressed stone segmental arch rings. The arches are of uneven spans, being wider in the centre. V-shaped cutwaters on the upstream side have pyramidal caps. Towpaths are on both sides. The coping is part stone, part brick. The aqueduct enters a lock on the W bank and has a cast iron trough with stone coping at the E end (passing over a former and earlier navigable channel) before it enters the Aberdulais Basin on the E bank.
Listed Grade II* for its industrial archaeological interest as a fine example of early C19 canal engineering in a prominent location, and for group value with other associated listed items on the Tennant Canal at Aberdulais. Scheduled Ancient Monument GM506.
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