We've never done this one before...now a class A 30 foot with toad. How is it...steep? which we have done just yesterday on 530 in Wyoming/191 in Utah.
You need to be clearer about which section you have in mind. Most of the comments apply to the steep and curvy part between Sedona and Flagstaff. I suspect though that you are thinking about the northern alternative to US89 through Page. The one that gives access to the north rim of the Grand Canyon. That gets higher than US89, with more grades and curves, but it doesn't have formal restrictions.