1 US HIGHWAY 89 ALT.
(between US 89 and Cottonwood, AZ)
Trucks over 50' in length
prohibited. This road is narrow and
winding with sharp curves and very tight hairpin turns.
About 7½ miles south of Jerome US
highway 89 Alt. comes to a summit. The
southbound descent from the summit is about 4½ miles of 6-7% grade with
many 20 and 30 mph curves and a 15 mph hairpin near the top. There are about 2 miles of 4% grade after
the steep section.
The northbound descent is about 12
miles of 6% grade with narrow road and many 20 mph curves and several 15
mph hairpin turns. The town of Jerome
is about 7 miles down from the summit. Jerome is perched on the side of the mountain and the road is very
narrow through town and includes a very sharp 10 mph hairpin turn and a
short section of very steep (10-12%) grade. After leaving town there are 3½ miles of 6% grade with
sharp turns. The grade eases when US 89
Alt. turns southeast toward Cottonwood. Use caution on this hill.