Full Report for Listed Buildings
The list description is not intended to be a complete inventory of what is listed: it is principally intended to aid identification. By law, the definition of a listed building includes the entire building (i) and any structure or object that is fixed to the said building and ancillary to it and (ii) any other structure or object that forms part of the land and has done so since before 1 July 1948, and was within the curtilage of the building, and ancillary to it, on the date on which said building was first included in the list, or on 1 January 1969, whichever was later.
Summary Description
Reference Number
87669
Building Number
Grade
II
Status
Designated
Date of Designation
27/01/2014
Date of Amendment
Name of Property
Ystrad Mynach South Signal Box
Address
Location
Unitary Authority
Caerphilly
Community
Gelligaer
Town
Locality
Ystrad Mynach
Easting
313968
Northing
193685
Street Side
W
Location
To the south of Ystrad Mynach station on the west side of the tracks off a rough lane from Twyn Road. Private property.
Description
Broad Class
Transport
Period
Modern
History
Built c1890 for the Rhymney railway by McKenzie and Holland and shown on the 1901 2nd Edition Ordnance Survey Map. Constructed as a Type 3 McKenzie and Holland Box but with a stone base, as specified by the Rhymney Railway, over the normal McKenzie and Holland practice of using brick and timber for a base. Its siting - high on an embankment overlooking the rail line - is a rare survivor of a once-common south Wales practice giving signalmen a clear view in this case of the sweeping line south of Ystrad Mynach station and the junction with the Merthyr branch line. This siting requires the use of an external platform to take the signal wires to ground level. Originally it would have been equipped with a McKenzie and Holland mechanical lever frame but this was removed shortly after inspection in 2013, along with the quadrants and block shelf indicators and instruments, but (disconnected) locking levers still in situ.
Exterior
Signal Box. Two storey of rock faced stone and timber with hipped corrugated sheet roof with ventilators. East trackside elevation with 2 tall round headed windows with small paned framed glazing to lower floor and timber gallery to the upper floor with continuous glazing of four horizontally sliding slash window. Built against the tackside elevation at low level is a platform supportng two changes in direction of the point rodding and signal wires, diverting them to ground level. Gallery on upper floor returns to north and south, later first floor extension with part galzed door to lever room and access steps to the south, presumably replacing originals. Plain stone rear (west) elevation.
Interior
Upper floor retains block shelf, locking levers and track layout plan.
Reason for designation
Included for its special architectual interest as a well preserved signal box, a rare surviving example of a McKenzie and Holland type 3 signal box, its design adapted to fit local requirements.
Cadw : Full Report for Listed Buildings [ Records 1 of 1 ]
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