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1GL Bolt: Highroad Bridge   

Bolt in South pier and East face of Highroad Bridge ; 4.68 ft. above towing-path [1GL, Liverpool to Port Carlisle, Mark No. 154] - evidently NOT the same as CUT MARK: BR PARA SW SIDE GARSTANG OLD RD 4.3M W CORNER NE FACE (ODN 24.8839m, AGL 0.4m).

Location
Grid reference: SD 4955 4451.
Landranger 102: Preston & Blackpool, Lytham St Anne's.
Explorer OL41: Forest of Bowland & Ribblesdale.
Explorer 296: Lancaster, Morecambe & Fleetwood.
Structure: Bridge.
Waypoint: BT1323.

Neighbouring Bench Marks
PIVOT Garstang, Milestone, Preston 10 380.00m to the south.
BOLT Garstang Bridge 511.08m to the northwest.
BM Garstang Bridge (NBM) 533.39m to the northwest.
BOLT Garstang, Church 722.50m to the northwest.
BM Garstang, Canal Bridge, Kepple Lane 812.16m to the northwest.
The nearest fundamental bench mark is Lancaster, 16.69km 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 74.1620 feet [22.6046 metres] above mean sea level (Liverpool datum). It was included on the Liverpool to Port Carlisle levelling line. The surveyor's description was No. 154. Bolt in South pier and East face of Highroad Bridge ; 4.68 ft. above towing-path (p415).

Logged Visits
Visited on 27th September 2015 by Houlie. Condition: Damaged.
On 4th level of stonework above towing path. Very eroded arrow head and datum line. Bolt also badly eroded. Photo to follow.
Location: https://www.flickr.com/photos/33138053@N02/
Detail: https://www.flickr.com/photos/33138053@N02/21758014965/in/dateposted/
If you have any corrections or additions to this record, please let us know.
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