Until recently this path was marked as "noexit", but it's recently been updated. The same person added the bridge. I presume they've over-zealously assumed the presence of a right of way means that the route is practicable in both locations. The erosion of the riverbank occurred as long ago as 2004 & a diversion was under discussion back then (https://democracy.devon.gov.uk/Data/Public%20Rights%20of%20Way%20Committee/20061114/Agenda/pdf-EEC-06-183-HQ.pdf).

I'm following up these edits, because they appear to rather go against our "on-the-ground" rule, which in general benefits walkers over & above OS maps. 