Flush Bracket 923: Cwm-Wysg-uchaf 

Flush Bracket on railway bridge at entrance to Cwm-Wysg-uchaf [2GL] - FB reported destroyed 12/1968.
Location
Grid reference: SN 9289 2927.
Landranger 160: Brecon Beacons.
Structure: Bridge.
Waypoint: FB923.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Brecon,
12.24km to the east.
Second Geodetic Levelling, England & Wales (1912-21)
This flush bracket was used during the Second geodetic levelling, England & Wales, and was levelled with a height of 664.1650 feet [202.4375 metres] above mean sea level (Newlyn datum). It was included on the Brecon to Llandovery levelling line. The surveyor's description was Flush Bracket on railway bridge at entrance to Cwm-Wysg-uchaf.
Third Geodetic Levelling, England & Wales (1950-68)
This flush bracket was used during the Third geodetic levelling, England & Wales. It was included on the Brecon to Llandovery levelling line.
Logged Visits
Logged on 16th April 2005 by RHW. Condition: Destroyed.
Bridge gone, trackbed still present S side of road
Location
Grid reference: SN 9289 2927.
Landranger 160: Brecon Beacons.
Structure: Bridge.
Waypoint: FB923.
Neighbouring Flush Brackets
| 924 | Sennybridge, Castle House 1.12km to the southwest. |
| G2976 | Cwm-Wysg-isaf 1.61km to the east. |
| 925 | Ynys-yr-wyddfa 1.84km to the west. |
| 922 | Nant-y-gwreiddyn 2.39km to the east. |
| 927 | Graiggoch Farm 2.93km to the west. |
Second Geodetic Levelling, England & Wales (1912-21)
This flush bracket was used during the Second geodetic levelling, England & Wales, and was levelled with a height of 664.1650 feet [202.4375 metres] above mean sea level (Newlyn datum). It was included on the Brecon to Llandovery levelling line. The surveyor's description was Flush Bracket on railway bridge at entrance to Cwm-Wysg-uchaf.
Third Geodetic Levelling, England & Wales (1950-68)
This flush bracket was used during the Third geodetic levelling, England & Wales. It was included on the Brecon to Llandovery levelling line.
Logged Visits
Logged on 16th April 2005 by RHW. Condition: Destroyed.
Bridge gone, trackbed still present S side of road
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