If the middle half is cut off by the two landslides, then it should be non-accessible (unless you climb the concrete cover), which, given it is a dirt road (see online info), should result in changes in `trail_visibility=`, `=obstacle`, or even `disused:highway=` or `abandoned:highway=`. Still need to survey to check this. c.f. e.g. https://www.openstreetmap.org/note/1499178

I guess I will go there tomorrow or on Friday. > It being this rural You are making it sound like this is High Island East Dam or Fan Lau or something. It is a 30 minute walk from Tai Wai Station, according to Graphhopper.