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Cof Cymru: National Historic Assets of Wales · Wales

Telford Milestone (11)

Trewalchmai, Isle of Anglesey, Wales

The record

Designation
Listed building, Grade II
Broad class
Transport
Date of designation
23 September 1998
Date of amendment
17 June 2020
Welsh name
Carreg Filltir Telford (11)
Locality
Gwalchmai
Community
Trewalchmai
Unitary authority
Isle of Anglesey
Country
Wales
Coordinates
53.25826, -4.40554
Cadw reference
20517

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1883 "Watershed map England, Wales 3." (David Rumsey Map Collection, Stanford Libraries).

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This record in Cadw's own full report ↗

Cadw's description

Located to the front of a low rubble field wall, slightly set back from the N side of the A5(T) Holyhead Road on the E approach to the village of Gwalchmai; c. 250m WNW of Gwalchmai tollhouse and c. 600m ENE of the church of St. Morhaiarn.

Following the Act of Union in 1801 a programme to improve the roads between the two capital cities of London and Dublin was initiated. In 1811 Thomas Telford was commissioned to undertake a survey of the roads between London and Holyhead and in 1817 began work on the northern stretch of the road at Shrewsbury. As well as overseeing the work, Thomas Telford also designed every detail of the road, and this milestone is one of a number designed for it. The completion of the stage between Holyhead and Menai Bridge saw all the milestones across Anglesey and into Bangor erected between 1825 and February 1826.

Dressed Anglesey limestone slab, with shallow triangular head and raking chamfered sides. Cast iron inset plate, white lettering on black reading: HOLY- / HEAD / 11 / MONA / 2 / BANGOR / 14.

Set in front of a rubble arch incorporated into a boundary wall: a very well preserved example of a “Telford Arch,” thought to have been designed to enhance and draw attention to the milestone.

Listed as a fine example of one of Telford's milestones retaining its cast iron plate.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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