Bulletin
IAPS WILL BE DOWN FOR SYSTEM MAINTENANCE ON OCTOBER 27 BEGINNING AT 4:30 PM. The fall harvest proclamation is in effect through November 17, 2025 allowing vehicles transporting corn, soybeans, hay, straw, silage, stover, fertilizer (dry, liquid, and gas), and manure (dry and liquid) to be up to 90k gross weight without a permit. It applies to all highways within Iowa excluding the interstate system. The loads may not exceed the maximum axle weight limit determined under the non-primary highway maximum gross weight table in Iowa Code § 321.463 (6) (b), by more than 12.5 percent, do not exceed the legal maximum axle weight limit of 20k, and comply with posted limits on roads and bridges. Please wait 24 hours after submitting your permit before contacting our service team for assistance at Oversizepermits@iowadot.us or 515-237-3264. All Systems Overweight Permit application ($500) allows travel on designated counties and local roads. Out-of-state carriers must have an IRP or farm plate to order any Iowa oversize or overweight permits. Boat transporters, call 844-311-4873 before hauling boats across state lines. WELCOME TO IOWA’S PERMITTING SYSTEM (IAPS) This site issues permits for oversize and overweight vehicles along state-maintained interstate, US, and IA routes ONLY. Permits for local or county roads should be obtained from those respective agencies. Permits are not valid during the nighttime hours of sunset to sunrise unless authorized for continuous movement. 2026 HOLIDAY RESTRICTIONS An oversize/overweight permit shall not be valid for travel on the following dates: Memorial Day: No travel after 12:00pm on May 22 until 30 minutes prior to sunrise on May 26 Independence Day: No travel after 12:00pm on July 3 until 30 minutes prior to sunrise on July 6 Labor Day: No travel after 12:00pm on Sept 4 until 30 minutes prior to sunrise on Sept 8 2025 OFFICE CLOSINGS & HOURS The Iowa DOT offices are closed on the following dates. Permits are valid on these dates, may still be applied for and system issued during these times. Permits requiring staff review will be delayed. New Year's Day – Wed, Jan 1 Martin Luther King Day - Mon, Jan 20 Memorial Day - Mon, May 26 Independence Day - Fri, July 4 Labor Day - Mon, Sept 1 Veterans Day - Tues, Nov 11 Thanksgiving - Wed, Nov 26, Thurs, Nov 27 & Fri, Nov 28 Christmas Day - Wed, Dec 24 & Thurs, Dec 25 Business hours are central standard time Mon-Fri 8:00am to 4:30pm, except Wed from 12:00 to 4:30 the office is closed to the public. Please see the FAQ page for additional information.
Starting October 27, 2025, single trip permits will have a ton fee pursuant to legislative changes passed with Iowa House File 979 to Iowa Code 321E.12.