Done this route about a year ago , actually went to Bergen, But from what i can remember, it was ABOUT Seven hours from Brevik, done four hours one evening and Three the next morning, had a few tolls that way and a lot of single carridge way, WATCH your SPEED, they are red hot over there. They were doing work on the roads but i don’t know how far they have gotten. The locals told me in Stavanger that they do not get the snow as bad in that bit of Norway, but their bad and my idea of bad may be a bit different. As i say i have only done it once so i don’t know the route as to tell you stop at Svens cafe etc, If you ever have to go to Bergen,It’s ferry ,tunnel, all the way 