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Aqueduct over Gwenffrywol

A Grade II Listed Building in Goetre Fawr, Monmouthshire

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Latitude: 51.7606 / 51°45'38"N

Longitude: -3.0034 / 3°0'12"W

OS Eastings: 330846

OS Northings: 207353

OS Grid: SO308073

Mapcode National: GBR J5.0984

Mapcode Global: VH79L.W0LN

Entry Name: Aqueduct over Gwenffrywol

Listing Date: 18 July 2001

Last Amended: 18 July 2001

Grade: II

Source: Cadw

Source ID: 25571

Building Class: Transport

Location: About 1000m south west of the village of Llanover and straddling the boundary between the two Communities.

County: Monmouthshire

Town: Pontypool

Community: Goetre Fawr

Community: Goetre Fawr

Locality: Monmouthshire and Brecon Canal

Traditional County: Monmouthshire

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The Brecknock and Abergavenny Canal was promoted in 1792 to connect the upper Usk valley to the Monmouthshire Canal at Pontymoile and from there to the sea at Newport. Construction began in 1797, with Thomas Dadford Jnr. as engineer, and the first section, from Gilwern to Llangynidr was completed in that year, with the stretch as far as Brecon following in 1800. Work then stopped for a time with the result that the section to the Blaenavon Road east of Govilon was not completed until 1805, now with Thomas Cartwright as engineer. Further funds had to be raised and the last section from west of Llanfoist to Pontymoile was completed betwen 1809 and 1812, with William Crossley as engineer. Linked to the tramroads the canal was an important artery for trade in iron, lime and coal. In 1865 the Brecknock and Abergavenny Canal Company merged with the Monmouthshire Railway and Canal Company who owned the connecting canal from Pontymoile to Newport. Later still in 1880 the MR&CC was bought out by the Great Western Railway and gradually the canal was run down until it was abandoned finally in 1962. Restoration work was begun in 1964, and the canal is once again open between Pontymoile and Brecon with the title Monmouthshire and Brecon Canal.


Built of squared coursed local sandstone with dressed voussoirs and parapet band. A low single arch aqueduct of very solid appearance with a semi-circular arch framed by battered walls and a band across at the crown. Deep curved wing walls, and a parapet rests on another band. This handsome structure probably has the same treatment on either face, but the upstream side was not available for inspection at resurvey. This aqueduct crosses the boundary into Llanover Community.

Reasons for Listing

Included for its special interest as a very handsome and well built canal aqueduct, one of the major structures surviving in use for the early C19 Brecknock and Abergavenny canal.

Other nearby listed buildings

  • II Aqueduct between Bridges No. 78 and 79 Monmouthshire and Brecon Canal
    The canal runs parallel to the A4052, separating Llanover village from Upper Llanover. It forms the eastern boundary of the Brecon Beacons National Park. The aqueduct crosses the boundary between Ll
  • II Bridge No. 78
    Carrying a footpath over the canal about 150m east of Pantglas Mill at the very northern extremity of Goetre Fawr Community.
  • II Ty-ifor
    About 150m north of the cross-roads at Pencroesoped in the direction of Llanover village.
  • II Bridge No. 79 Monmouthshire and Brecon Canal
    The canal runs parallel to the A4052, separating Llanover village from Upper Llanover. It forms the eastern boundary of the Brecon Beacons National Park. The bridges are numbered from south to north
  • II Bridge No. 77
    Carrying the Old Abergavenny Road over the canal.
  • II Bryn-hyfryd
    About 1km west of the A4052 approached across the canal from the minor road by Llanover police station.
  • II Granary/Stable at Bryn-hyfryd
    About 50m north of the house.
  • II Bridge No. 76
    Carrying the lane going east from Pencroesoped over the canal.

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