PJAMM will ride and document this climb in 2019. We have confirmed with several Strava members who have ridden this climb that it can be done on a road bike:
Strava Alex Krill advises this is paved to the top.
Erik Dyrvik (strava) "Yes, but it is not the best pavement I have seen. "
Ingvar Straume (strava) - "Paved all the way up. No problems with ordinary road wheel setup."
This is an excellent site for cycling in Norway in general: https://cyclingtips.com/2015/04/roadtripping-norway/