Thank-you for bringing these to my attention.  I think what's happened is that these ways are correctly (in my view*) marked as bike-only; BUT I've neglected to check the foot-routability of the surrounding roads a a result.  E.g. they're marked as sidewalk=separate, but I've ended up effectively removing the sidewalk by mistake.   I'll fix them up shortly.  (Either by making the sidewalk part of the roadway, or by making  most of the cycleway a shared, segregated sidepath with appropriate end points.
