Text and photographs copyright of Jim Shead.
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Description: A proposal for a 14 mile navigation from Bishopbridge on the River Ancholme to Barlings Eua on the River Witham 6.5 miles below Lincoln. Never authorised or built.
History: The scheme was put forward by the Ancholme commissioners in 1823 and then dropped. The idea was revived in 1841 and 1844 with the support of Sir John Rennie.
He made a survey and proposed two alternative routes.