Ancient Monuments

History on the Ground

This site is entirely user-supported. See how you can help.

Castle Malgwyn Bridge

A Scheduled Monument in Llangoedmor, Ceredigion

We don't have any photos of this monument yet. Why don't you be the first to send us one?

Upload Photo »

Approximate Location Map
Large Map »

If Google Street View is available, the image is from the best available vantage point looking, if possible, towards the location of the monument. Where it is not available, the satellite view is shown instead.


Latitude: 52.0615 / 52°3'41"N

Longitude: -4.6011 / 4°36'3"W

OS Eastings: 221786

OS Northings: 243542

OS Grid: SN217435

Mapcode National: GBR D2.D7DK

Mapcode Global: VH2MX.6FGZ

Entry Name: Castle Malgwyn Bridge

Scheduled Date: 31 August 1972

Source: Cadw

Source ID: 449

Cadw Legacy ID: PE383

Schedule Class: Transport

Category: Bridge

Period: Post Medieval/Modern

County: Ceredigion

Community: Llangoedmor

Built-Up Area: Llechryd

Traditional County: Pembrokeshire


The monument consists of the remains of a bridge, dating to the post-medieval period built by Sir Benjamin Hammet in 1799 to carry the Llechryd to Boncarth road over a canal that had been newly built in 1772 and which supplied power to the Castell Malgwyn Tinplate Works (1772-1806). The single span rubble stone bridge with a flat slate-coped parapet has a shallow cut stone arch. Above the voussoirs is an arch-ring string course. There are two iron plaque keystones on either side recessed into the masonry. Both have a representation of a castle on the top, and crossed canons on the bottom, one bears the inscription Castle Maelgwyn 1799, the other Sir Benjamin Hammett.

The monument is of national importance for its potential to enhance our knowledge of post-medieval construction techniques and transportation systems. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits. The structure itself may be expected to contain archaeological information concerning chronology and building techniques.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

Source: Cadw

Other nearby scheduled monuments is an independent online resource and is not associated with any government department. All government data published here is used under licence. Please do not contact for any queries related to any individual ancient or schedued monument, planning permission related to scheduled monuments or the scheduling process itself. is a Good Stuff website.