Moab route

I have been to Moab on just about every route possible. The only really steep grade south of Moab is on US163 on the west side of the San Juan river heading into Monument Valley. It is stated to be 10% and it probably is but it's short, maybe half a mile. More of a problem coming down as you have to come to almost a stop over the narrow bridge and 90 degree turn at the bottom.