It does not seem to be in the Defence of Britain database in the kmz file for Google Earth, nor from a quick scan, in Pastscape.
However i note that there ar a number of similar "lumps" visible in google streetview on the north side of the bridge, could they be associated with some sort of drainage system?
(and there are also large manhole covers on both sides of the road at that point)
kevin
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Last edit: 02 May 2018 22:23 by netcompsys. Reason: added screenshot
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