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Folly Bridge (Canal Bridge No 119)

A Grade II Listed Building in Llangattock, Powys

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Latitude: 51.8614 / 51°51'40"N

Longitude: -3.1575 / 3°9'27"W

OS Eastings: 320384

OS Northings: 218719

OS Grid: SO203187

Mapcode National: GBR YZ.SZ9V

Mapcode Global: VH6CH.7G2Y

Entry Name: Folly Bridge (Canal Bridge No 119)

Listing Date: 21 October 1998

Last Amended: 21 October 1998

Grade: II

Source: Cadw

Source ID: 20695

Building Class: Transport

Location: The bridge carries a trackway and footpath NW from the hamlet of Dardy into woodland owned by the Glanusk Estate.

County: Powys

Community: Llangattock (Llangatwg)

Community: Llangattock

Locality: Dardy

Traditional County: Brecknockshire

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The Brecknock and Abergavenny Canal was proposed in 1792 to connect the Upper Usk valley to the Monmouthshire Canal at Pontymoile and from there to the sea at Newport. The middle section of the canal, between Gilwern and Talybont and including Llangattock, was cut between 1797 and 1799. The upper section between Talybont and Brecon opened in 1800, both sections being engineered by Thomas Dadford. The lower section between Gilwern and Pontymoile was completed in 1812 and was engineered by William Crosley. The canal was sold to the Monmouthshire Canal Company in 1865, which was later incorporated into the Great Western Railway. The last toll was taken on the canal in 1933 and it was finally abandoned in 1962. The canal, renamed the Monmouthshire and Brecon Canal, has been undergoing restoration since 1964, and is currently used by pleasure craft.

This bridge lies within the section constructed by Thomas Dadford between 1797 and 1799.


Single-span hump-backed bridge of rubble sandstone, with asymmetrical segmental arch and continuous parapets. The arch has thin voussoirs and keystones. The parapets are splayed with square end piers. The copings are mainly of upright stones.

Reasons for Listing

Listed for its special interest as one of a group of well-preserved original Brecknock and Abergavenny Canal bridges.

Other nearby listed buildings

  • II* Llan Wysg
    Situated to the NW of Dardy hamlet, on the N side of the B4558 road, where the ground slopes down to the River Usk. The house is approached by a driveway from the SE.
  • II Ice House at Llan Wysg
    Situated in the garden at Llan Wysg, to the NE of the house, where the ground slopes down towards the River Usk.
  • II Llan Wysg Cottage
    Located at the N end of Dardy, a C19 settlement, to the N of Llangattock village.
  • II South Lodge
    Located on the N side of the driveway which forms the S entrance to Glanusk Park. Just off the B4558 Llangattock to Llangynidr road. The ground falls away steeply to the N. The house is surrounded
  • II Springfield Cottage
    Located at the SE end of Dardy, a C19 settlement to the N of Llangattock village.
  • II Lodge to Maescelyn
    Situated to NW of the town at the bottom of the drive to Maescelyn House; facing S. beside the pyramidal capped gate piers.
  • II Baylis Bridge (Canal Bridge No 120)
    The bridge carries a track over the canal linking fields on the Glanusk Estate. It is 0.25km E of Llwyncelyn Bridge (Canal Bridge No 121).
  • II Llanfair Farmhouse
    To NW of the town and reached by a back road to Tretower N off A40, set back from the road and end on into the hillside.

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