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OSBM Bolt: Neath Bridge 
OSBM Bolt on abutment at centre of Neath Bridge, W side of road [3GL}; OSBM BOLT NEATH BR W SIDE RD 10.7M N END BR.
Location
Grid reference: SM 9050 0126.
Landranger 157: St David's & Haverfordwest.
Landranger 158: Tenby & Pembroke.
Structure: Bridge.
Waypoint: OS0915.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Haverfordwest (1969),
15.76km to the northeast.
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Haverfordwest to Carmarthen levelling line. The surveyor's description was OSBM Bolt on abutment at centre of Neath Bridge, W side of road.
Location
Grid reference: SM 9050 0126.
Landranger 157: St David's & Haverfordwest.
Landranger 158: Tenby & Pembroke.
Structure: Bridge.
Waypoint: OS0915.
Neighbouring Flush Brackets
| G5102 | Newton Farm 810.99m to the south. |
| G5101 | Rhoscrowther 841.49m to the north. |
| G5103 | Kilpaison Burrows 1.22km to the west. |
| G4919 | West Popton Farm 2.16km to the north. |
| G5105 | Gupton Farm 2.54km to the southwest. |
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Haverfordwest to Carmarthen levelling line. The surveyor's description was OSBM Bolt on abutment at centre of Neath Bridge, W side of road.
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