"As of 2026/03/07, this road is officially closed, unmaintained, and though pedestrians or bikes could use it, there are very clear and visible messages on each access ramps that people may do so under their own responsability and that (car/individual) insurance policies will not work there. 

Most access ramps are blocked by stones to prevent car access.

I would not describe this road and poorly maintained and often closed, while authorities do all they can to prevent ppl from going there.
this is valid for all sections from Porto Moniz to Boaventura."
OSM snapshot date: 2026-02-21T15:17:51Z
POI name: Antiga Estrada Regional 101
POI types: hwtag-oneway hwtag-yesbicycle hwtag-yesfoot highway-unclassified
 #CoMaps android 2026.02.23-9-Google