Between ID 3 (5 miles south of the Harrison area) and the end of ID 97 (25 miles north of the Harrison area). There is a length limit in effect. Vehicle length limit 65 ft.

Web Comment: Permanent length limit in effect, 48 ft or less semitrailers may not exceed the 65.00 ft overall length limit due to narrow roadway. Permitted vehicle combinations hauling non-reducible loads are not subject to the 65 ft overall length restriction.