Unable to answer "What’s the weight limit here?" – on bridge: Minor/Unclassified Road – way/52635456 via StreetComplete 62.1:

This is a culvert not a bridge

There is some kind of obelisk here on the rocks

via StreetComplete 62.1

horse stile leads to strip between two fences

ditch is not a path

surrounded by gorse, only a small entrance on fence side

almost overgrown path

track

overgrown scrub, but where does the track leading into it go? There is an old fence around it too

there's a ditch here but not a path but they go in different directions

overgrown