The best route to the start is to take the road past the school out of Stannington. The bridge is at the indicated W3Words location. The best parking is a layby some 200yds before the bridge and another immediately before the bridge. DO NOT be tempted to park on the grass as there are many hidden ditches and gulleys.
Bellasis Bridge is at Prepares.camcorder.devoured
There were only two stiles and some very distant animals when I checked it.
You might, however, want to wear some insect repellent as the flies were a bit bothersome.