Cof Cymru: National Historic Assets of Wales · Wales
Upper Lock Chamber
Carreghofa, Powys, Wales
The record
- Designation
- Listed building, Grade II
- Broad class
- Transport
- Date of designation
- 5 April 1993
- Community
- Carreghofa
- Unitary authority
- Powys
- Country
- Wales
- Coordinates
- 52.77485, -3.10671
- Cadw reference
- 14184
Slide toward Today to fade the historical sheet and see the modern map underneath.
David Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesLlyfrgell Genedlaethol Cymru – The National Library of Wales
Shown on 5 historical map sheets, the earliest the 1795 "To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most humbly inscribed by his obedient humble servant" (Llyfrgell Genedlaethol Cymru – The National Library of Wales).
Cadw's description
Location
To east of Bridge 95 over canal.
History
Built 1794-7, engineered by John and Thomas Dadford of Cardiff and Newport, at northern termination of Montgomeryshire Canal linking to Ellesmere Canal, Llanymynech branch. Modified before 1831 with new paddle gear etc designed by George Buck, engineer, and cast by Coalbrookdale Iron Company.
Exterior
Curved, splayed east entry from Ellesmere Canal with feeder entry to north. Massive stonework quaysides with ironwork fenders, curved insets for former ironwork gates. Adjoining the single (replacement) lock gate is a good example of Buck's patented paddle-gear set into a stonework surround. Pyramidal flanged ironwork frame with arched braces and rear brackets for winding handle etc. Toothed drivewheel with V-shaped pivoting arm linked to sluices in lock floor.
Stonework quaysides to lock chamber with double (replacement) gates closing west end; ironwork vertical sluices to timber gates. Stonework revetments at west end with brickwork facings, recessed stone stairs on north side descend to sinuous masonry catwalk below embankment. Small rubble-faced dock curves to west to rejoin canal-line above Bridge 95; arched brick culvert adjoins steps down and old ironwalk bollard on north side.
Reason for designation
Group value with other canal structures in an exceptional location at Carreghofa Locks.
Nearby in the register
- Toll Gauger's Hut to E of No 1 The LocksTransportunder 1 mi
- By-Pass Pond and Spillway with Sluice-Gate to south of upper lock chamberTransportunder 1 mi
- Pigsty with Walled Pen to E of No 1 The LocksAgriculture and Subsistenceunder 1 mi
- Lock Gates and Paddle GearTransportunder 1 mi
Other entries of the same register within about three miles of this one, by straight line.