History in Structure

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Railway Viaduct north of Malltraeth

A Grade II Listed Building in Bodorgan, Isle of Anglesey

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Latitude: 53.1954 / 53°11'43"N

Longitude: -4.3752 / 4°22'30"W

OS Eastings: 241423

OS Northings: 369112

OS Grid: SH414691

Mapcode National: GBR 5C.2RND

Mapcode Global: WH42Z.RYR7

Entry Name: Railway Viaduct north of Malltraeth

Listing Date: 3 September 1998

Last Amended: 3 September 1998

Grade: II

Source: Cadw

Source ID: 20408

Building Class: Transport

Location: Carrying the main Chester to Holyhead railway line over the Afon Cefni and flanking stretches of land across the Malltraeth Marsh; c. 750m NE of Malltraeth.

County: Isle of Anglesey

Community: Bodorgan

Community: Bodorgan

Locality: Malltraeth

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The Chester to Holyhead railway was proposed to improve links between London and Dublin. The bill was passed in July 1844, with Robert Stephenson as engineer and Francis Thompson of Derby as architect. The earliest work on the line took place on the stretches running through Llangaffo and Trefdraeth parishes, during the summer of 1845; the main contractor was Edward Ladd Betts who came to reside at Aber Braint while work was in progress. The line was opened on 31st March 1848 when the first train made the journey from Llanfairpwllgwyngyll to Holyhead.


Railway viaduct of 19 low spans, each a voussoir arch. Built of rusticated limestone masonry laid to diminishing courses; plain dressed parapet over a stressed cornice. Each arch now with internal concrete structural linings.

Reasons for Listing

Included as an important structural component of the Chester to Holyhead railway, and a prominent landscape feature within the surrounding areas of reclaimed marshland. A bold design using masonry detailing to give the impression of solidity and permanence.

Other nearby listed buildings

  • II Glantraeth House
    In an isolated location, reached by private lane from the S side of the Trefdraeth to Llangaffo road
  • II Ty'n Llan
    Located in the centre of the small hamlet of Trefdraeth; set back from the N side of the road leadin
  • II* Church of St. Beuno (Eglwys Beuno Sant)
    Located in the centre of the small hamlet of Trefdraeth; set back from the N side of the road leadin
  • II Aberhoccwn
    Set at right angles to the N side of a country road leading from the A4080 to the western shore of t

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