Mostly very good and not too rough asphalt. One or more vehicles every 20-120 seconds on a Thursday afternoon. Not a very wide road and some vehicles drive past you at up to 130 km/h (I drove the whole way by car, so I know how fast they sometimes go here). A radar and a rear-view mirror are highly recommended here, and strong nerves can't hurt either. I would rather avoid this route. Not a good road for bikepackers with wide bags!