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 an axle load limit in effect. A speed limit is in force for heavy vehicles. There is a width limit in effect. Width limit 12'6". Truck speed limit 30 MPH. Axle weight limit 14,000 lbs.

Web Comment: Commercial Vehicles 10,000 GVWR and greater will be restricted to 30 miles per hour and 14,000 LB per axle, or legal axle weight whichever is less on SH-97 from mile post 60.76 to 96.42 (I-90) Restrictions are in place because the highway is showing stress from winter freeze/thaw cycle.

Between ID 3 (5 miles south of the Harrison area) and I-90 (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.