Route through a deep river ford

Hi,

I’m getting routed through a river sometimes when cycling in this area. The map does indicate a warning triangle there. I checked if it is something I could fix in OpenStreetMap, but it is accurately tagged there as a ford (with recent comments that it is deep/impassable). After trying it and having to turn back I looked for a setting to avoid this sort of thing but I don’t see anything like that. 

Is the best solution to check a route for these warning icons, and manually add a via point? Or is there a global option I’m missing? I wonder if there is value in a negative via point option (i.e. ‘do not route via this point’). 

here’s a route with the feature in question https://cycle.travel/map/journey/978960

Thanks :)