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Bridge 150 over the Montgomeryshire Canal

A Grade II Listed Building in Montgomery, Powys

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Latitude: 52.5396 / 52°32'22"N

Longitude: -3.2547 / 3°15'16"W

OS Eastings: 315001

OS Northings: 294266

OS Grid: SO150942

Mapcode National: GBR 9V.F5CJ

Mapcode Global: VH684.JFRH

Plus Code: 9C4RGPQW+R4

Entry Name: Bridge 150 over the Montgomeryshire Canal

Listing Date: 14 July 1997

Last Amended: 14 July 1997

Grade: II

Source: Cadw

Source ID: 18536

Building Class: Transport

Location: Located approximately 200m SW of Bridge 149 and its adjoining lock. The bridge carries a farm track linking two fields.

County: Powys

Community: Llandyssil (Llandysul)

Community: Llandyssil

Locality: Dolforwyn

Traditional County: Montgomeryshire

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One of a group of ‘fish-bellied’ iron bridges probably designed and constructed by George Buck, engineer of the Montgomeryshire Canal. He was engineer of the Western branch in 1832-3, but bridges of this type were built up to c1850.


Cast-iron ‘fish-bellied’ beam bridge. There are 5 original beams supporting a renewed deck with plywood soffit. The parapets consist of timber posts and 3 rows of modern steel rails. The iron beams sit on splayed brick abutments with sandstone copings and padstones. Immediately to the S are cast iron rebates for stop planks, and a sandstone block with iron ring no doubt for attaching boats. Beyond is a weir with wooden planks, leading down to the W.

Reasons for Listing

Listed as one of a small group of ‘fish-bellied’ iron bridges over the Montgomeryshire Canal. These bridges represent the early use of girders of this characteristic shape, designed to compensate for the low tensile strength of cast iron.

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Other nearby listed buildings

  • II Bridge 149 over the Montgomeryshire Canal and Lock
    Located off a narrow lane which runs to the W of the A 483 and the River Severn. A small group of buildings including New House lie to the W.
  • II Castle Cottage
    The cottage is sited in woodland on the ridge immediately SW of Dolforwyn Castle.
  • II Bridge 148 and Byles Lock
    Located off a narrow lane which runs to the W of the A 483 and the River Severn. The lock keeper's cottage lies to the W.
  • I Dolforwyn Castle
    Located on a sharp promontory above the Severn Valley, in an excellent defensive position, with good views all round.
  • II Cilgwrgan
    Located in a low-lying position in the Severn valley fronting the A483.
  • II Aberbechan Aqueduct
    Carries the Montgomeryshire Canal over the Bechan Brook on the boundary of Llandyssil and Newtown Communities.
  • II Cilgwrgan Bridge
    Bridge spanning the River Severn on the B4389 which links the A483 with Tregynon. Located on the boundary with Newtown and Llanllwchaiarn.
  • II Oak Tree Cottage
    Located on a narrow lane, to the rear of the Waterloo Arms in Abermule

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