Cenarth Bridge ( cy, Pont Cenarth), also spelt Kenarth Bridge,
is a three
arch bridge
An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side. A viaduct (a ...
which spans the
River Teifi at
Cenarth,
Carmarthenshire
Carmarthenshire ( cy, Sir Gaerfyrddin; or informally ') is a county in the south-west of Wales. The three largest towns are Llanelli, Carmarthen and Ammanford. Carmarthen is the county town and administrative centre. The county is known ...
in Wales. The bridge was built between 1785 and 1787 and designed by David Edwards, the son of
William Edwards who built the
Old Bridge at
Pontypridd. The bridge straddles the border between Carmarthenshire and
Ceredigion
Ceredigion ( , , ) is a county in the west of Wales, corresponding to the historic county of Cardiganshire. During the second half of the first millennium Ceredigion was a minor kingdom. It has been administered as a county since 1282. C ...
. It is both a Grade II*
listed structure and a
scheduled monument
In the United Kingdom, a scheduled monument is a nationally important archaeological site or historic building, given protection against unauthorised change.
The various pieces of legislation that legally protect heritage assets from damage and d ...
.
History and construction

A bridge over the River Teifi at Cenarth has existed at least since 1188, when it was mentioned in the writings of
Gerald of Wales. The present bridge was constructed between 1785 and 1787
by Messrs Watkins and Webb.
It was designed by David Edwards (born 1748), who also built the Llandeilo Yr Ynys bridge near
Nantgaredig earlier in 1786 and the later
Newport Bridge.

The bridge was designed to carry
horse-drawn vehicles and has three stone arches which span , and .
The bridge is made of
ashlar masonry and
rubble stone with the parapet coping in rough slate. The design includes two cylindrical holes (perforated
spandrel
A spandrel is a roughly triangular space, usually found in pairs, between the top of an arch and a rectangular frame; between the tops of two adjacent arches or one of the four spaces between a circle within a square. They are frequently fill ...
s) in diameter, one either side of the central span. The holes were included in the design to reduce the weight of the structure and also to allow floodwaters to pass through them, instead of going over the top of the bridge: while the river appears to flow only under the southern arch, when in full flood the Teifi flows through all three arches.
This feature was used by Edwards's father William, who used six holes in the
Old Bridge at
Pontypridd to reduce the weight and pressure on the centre section.
The accounts for the local
quarter sessions show that in 1787 David Edwards was paid £2.12s.2d
ster. for half his fee.
Therefore his total fee for the bridge was £5.4s.4d. In 2014, this would have been worth between £6,600 and £9,100.
The bridge was widened in 1852 by
Richard Kyrke Penson to make the right-angled bend at the north end easier to negotiate.
The bridge joins two counties, Carmarthenshire and Ceredigion. It forms part of the former turnpike, now the
A484 road, from
Carmarthen to
Cardigan. It is wide, but it has no
footpaths. It is still being used by motor traffic in the 2010s with a
speed limit of .
The bridge was Grade II* listed in the 1960s, with the Carmarthenshire southern end listed on 21 September 1964 and the Ceredigion northern end listed later on 23 June 1967.
The bridge is also a Scheduled Ancient Monument.
See also
*
List of bridges in Wales
*
Cenarth Falls
Notes
External links
{{commons category, Cenarth Bridge
Royal Commission: images and records
Stone bridges in the United Kingdom
Bridges in Carmarthenshire
Bridges in Ceredigion
Bridges completed in 1787
Grade II* listed bridges in Wales
Road bridges in Wales
Scheduled monuments in Wales