User:  guest [login]

1GL Bolt: Calder Bridge   

Bolt in South pier and East face of Great Calder Bridge ; 4.46 ft. above surface [1GL, Liverpool to Port Carlisle, Mark No. 150]; PA BOLT BR PARA 5.5M N SE CORNER E FACE (ODN 16.4379m, AGL 1.3m).

Location
Grid reference: SD 4991 4329.
Landranger 102: Preston & Blackpool, Lytham St Anne's.
Explorer OL41: Forest of Bowland & Ribblesdale.
Explorer 296: Lancaster, Morecambe & Fleetwood.
Structure: Bridge.
Waypoint: BT1322.

Neighbouring Bench Marks
BM Catterall, B6430, Duckworth Bridge 330.15m to the south.
PIVOT Catterall, Milestone, Preston 9 643.27m to the south.
BM Catterall, Brockholes Arms 849.00m to the south.
PIVOT Garstang, Milestone, Preston 10 913.89m to the northwest.
RIVET Bowgreave, Ray Lane Bridge 1.10km to the northeast.
The nearest fundamental bench mark is Lancaster, 17.93km to the north.

First Primary Levelling, England & Wales (1840-60)
This bench mark was used during the First primary levelling, England & Wales, and was levelled with a height of 53.9820 feet [16.4537 metres] above mean sea level (Liverpool datum). It was included on the Liverpool to Port Carlisle levelling line. The surveyor's description was No. 150. Bolt in South pier and East face of Great Calder Bridge ; 4.46 ft. above surface (p415).

Logged Visits
Visited on 16th September 2012 by dal. Condition: Good.
Bolt at the centre of the cut mark. Wrong side of the parapet. Not convinced about the 1.3m AGL - I put it above head height (and above road level).
If you have any corrections or additions to this record, please let us know.
admin@bench-marks.org.uk