17    US HIGHWAY 89 ALT.

          (between Flagstaff and Sedona, AZ)

          "Trucker's notice—US 89 A not recommended for heavy trucks."  This sign names the road US 89 A but some maps show it as a state highway.

            From the junction of I-17 and US 89 A just south of Flagstaff, the road rolls up and down and descends gradually for about 8½ miles.  At this point (about milepost 390½) there is a sign for southbound traffic—"7% grade next 3 miles."  There are many curves, including several 15 mph hairpin turns.  The road is also very narrow.  After the 3 miles of 7%, the grade is variable and rolling but continues to descend gradually for about 11 miles.  There are some 5 and 6% sections but they are usually short.  The road continues to be narrow and winding.