JOHNSTON, Iowa – September 18, 2017 – To help haul in this year’s harvest, Iowa Governor Kim Reynolds signed into effect today a proclamation granting a temporary 60-day weight limit exemption for trucks on Iowa roads. The 2017 Harvest Weight Proclamation specifically increases the weight allowable for shipment of corn, soybeans, hay, straw and stover, by 12.5 percent per axle (up to a maximum of 90,000 pounds) without the need for an oversize/overweight permit.