OSBM Bolt   

OSBM Bolt on W parapet of bridge, 3' from N end [3GL] - evidently replaced by new Rivet BM in 1970.

Location
Grid reference: TA 3093 0407.
Landranger 113: Grimsby, Louth & Market Rasen.
Structure: Bridge.
Waypoint: OS0100.

Neighbouring Flush Brackets

S0588	Humberston, School 870.00m to the north.
G4700	Humberston Road 1.38km to the south.
G4701	Humberston 1.98km to the north.
S0589	Tetney, Plough Inn 3.07km to the south.
G4717	Tetney, School 3.18km to the south.

The nearest fundamental bench mark is Immingham, 17.39km to the northwest.

Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Boston to Immingham levelling line. The surveyor's description was OSBM Bolt on W parapet of bridge, 3' from N end.

Logged Visits
Logged on 28th September 2006 by Brisey. Condition: Destroyed.
The bridge parapets have been remade in recent years, and the relevant one has suffered accident damage, so it's gone. (OSBM Photo ID 7955).