I remember one of my first times at the 'giogo' (summit, ridge)
I was a little hero in my own mind.... until the first cyclist arrived from the opposite side. Damn! Those are the heroes!
The Grossglockner hochalpenstrasse (high alpine road) offer MUCH better riding. Less steep and with wider turns. In the old days they raced there, on gravel, much like the classic Pikes Peak. Season start/finish and opening hours are different for different vehicles. Mostly to allow everyone off the mountain before dark and after/before any rain freezes.
Bucket list roads? Yes