Iowa Extends Harvest Weight Limit Allowance
Governor Kim Reynolds signed a proclamation allowing overweight farm vehicles on Iowa highways through December 6, 2026.
Updated on Nov. 6, 2026 in Agriculture
Governor Kim Reynolds signed a proclamation extending harvest weight limit allowances, effective immediately and running through December 6, 2026. Qualifying vehicles carrying corn, soybeans, hay, straw, silage, stover, fertilizer, or manure may exceed weight limits without a permit on non-interstate Iowa highways.
Why it matters
The extension gives farmers and agricultural haulers flexibility to move harvest and input materials during the busy fall season without obtaining individual permits. Vehicles remain capped at 90,000 pounds gross weight and must still respect posted road and bridge limits.
Qualifying vehicles may weigh up to 90,000 pounds gross, with axle loads exceeding the non-primary highway limit by no more than 12.5 percent and capped at 20,000 pounds. The allowance covers corn, soybeans, hay, straw, silage, stover, fertilizer, and manure hauls through December 6, 2026.
The players
Kim Reynolds
Kim Reynolds is the Governor of Iowa, who signed the proclamation extending harvest weight limit allowances.
The details
The proclamation applies to highways within Iowa, excluding the interstate system, and allows qualifying loads to be overweight without a permit for its duration. Loads must comply with posted limits on roads and bridges, and the proclamation does not waive those restrictions.
Timeline
November 6, 2026: Governor Reynolds signed the proclamation, effective immediately.
December 6, 2026: The harvest weight limit proclamation expires.
Roadmap
Iowa's governor has used temporary proclamations to relax weight limits during harvest for farm-related hauling, rather than requiring individual overweight permits. This extension continues that approach by covering a broad range of grain, forage, and fertilizer materials through early December.
Farmers and agricultural haulers in Iowa can move corn, soybeans, hay, fertilizer, and manure on non-interstate highways without an overweight permit through December 6, 2026. Drivers must still keep gross weight at or below 90,000 pounds and follow posted road and bridge limits.
The takeaway
Agricultural haulers in Iowa should confirm their loads fit the proclamation's 90,000-pound and axle limits before relying on the waiver. Checking posted restrictions on specific roads and bridges remains necessary throughout the allowance period.
What happens next
The proclamation expires on December 6, 2026, after which standard weight limits and permit requirements return.
Further reading
For more on the farm economy behind harvest logistics, see Agriculture coverage.
