Authorizes the Missouri Department of Transportation to provide vehicle weight exemptions for certain vehicles

This act authorizes the Missouri Department of Transportation to allow any truck, tractor-trailer, or other combination engaged in transporting material or equipment to a construction site where economic activity occurs or will occur to operate with a weight not to exceed 22,400 pounds on one axle or a weight not to exceed 44,800 pounds on any tandem axle, provided that such vehicle shall not operate on the interstate highway system in excess of the weight limits imposed by federal statute and shall not exceed the width and length limitations provided in current law. One-way trips shall be limited to sixteen miles and round trips shall be limited to thirty-two miles. Qualifying trips are limited to multimodal trips within a single county.