Iowa Code Title VIII. Transportation [Chs. 306-330B] § 321.456. Height of vehicles

1. A vehicle unladen or with load shall not exceed a height of thirteen feet six inches.

2. Notwithstanding subsection 1, a vehicle or combination of vehicles coupled together and used exclusively for the transportation of passenger vehicles, light delivery trucks, panel delivery trucks, pickup trucks, or recreational vehicle chassis may operate with a height not to exceed fourteen feet.

3. Notwithstanding subsection 1, a vehicle or combination of vehicles transporting a divisible load of hay, straw, stover, or bagged livestock bedding may operate with a height not to exceed fourteen feet six inches.

4. This section shall not be construed to require any railroad or public authorities to provide sufficient vertical clearance to permit the operation of such vehicle upon the highways of this state. Any damage to highways, highway or railroad structures, or underpasses caused by the height of any vehicle provided for by this section shall be borne by the operator or owner of the vehicle.