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Pont Cysyllte (Cysylltau Bridge)
River Dee, Froncysyllte, Wrexham, Wales, UK
Pont Cysyllte (Cysylltau Bridge)
associated engineer
Not known
date  1697
UK era  Stuart  |  category  Bridge  |  reference  SJ267420
ICE reference number  HEW 160
photo  © Crown copyright: Royal Commission on the Ancient and Historical Monuments of Wales | © Hawlfraint y Goron: Comisiwn Brenhinol Henebion Cymru
Cysyllte Ancient Bridge, known locally as Pont Cysyllte or Pont Cysylltau, is a fine post-medieval masonry bridge over the River Dee near Telford’s famous Pontcysyllte Aqueduct. The bridge is a Grade I listed Scheduled Ancient Monument and continues to carry road traffic. It has been much repaired over the years so that only the south arch and part of the south pier are from the original structure.
The 17th century sandstone bridge carries a single lane of the B5434 Gate Road over a bend in the River Dee between Trevor (Trefor) and Froncysyllte. It lies 200m west of the Pontcysyllte Aqueduct (NPRN 34410, SJ269420), designed by Thomas Telford (1757-1834) and built 1795-1805.
Pont Cysyllte has three segmental arches with double arch rings in two orders. From south to north the spans measure 10.7m, 14m and 14.2m. It is one of the earliest extant examples of a bridge featuring slightly projecting keystones, a construction method that became popular in the 19th century.
Full-height pointed cutwaters on the piers form triangular refuges on both sides of the roadway. The main structure is of coursed squared ashlar masonry but the approach walls are of uncoursed random rubble.
The original bridge has been widened a little, probably in the 18th century, providing about 3m between stone parapet walls. However, its shorter narrower south arch and the lower part of the south pier appear to be part of the 1697 structure. The south pier is stepped twice whereas the north pier is stepped once.
Road use is limited to vehicles less than 2m wide, except for buses and coaches. The bridge received Grade I listing in July 1963, and it is also a Scheduled Ancient Monument (DE027).
Research: ECPK
reference sources   CEH Wales

Pont Cysyllte (Cysylltau Bridge)