3350 metres: The highest ?surfaced road.
The Michelin map has this road marked in red and white, i.e. difficult or dangerous route. It is just over the French border in Italyand leaves Brdonecchia to the west, at the entry to Fréjus tunnel. goes through Rochelolles, and finishes at Rognosa d'Etiache. I can't tell if it's properly surfaced; if it is I doubt there is higher.