I've driven over that a couple of times. Its a great road anyway and that bridge is stunning especially as you see it in the distance.
The noise in the car as you drive over is mainly "Keep your eyes on the road. !" (nervous passengers)
Cuts down the traffic in the valley as well.
One amusing advert over here is for rail trips in France and they keep using that bridge. Its a road bridge and I don't think there's a railway anywhere near it.
