It looks as though most narrowboats could get under the bridge even if it was closed.
Photograph taken by Charles Lyne on 17 August 2009 and was added to the database on Thursday the 29th of September, 2011
Licensed under a Creative Commons Attribution-ShareAlike licence, see the terms of use
This photo is of Railway Swing Bridge (Boston Docks Branch) on the River Witham (Boston to the Wash)