Boat transporters Call Before You Haul boats across state lines to avoid delays at 1-844-311-4873.
Please submit .jpeg files by email to Oversizepermits@iowadot.us or fax to 515-237-3257.
On July 1, 2020, Iowa law eliminated over-dimensional permits for hay, straw, stover, or bagged livestock bedding. Legal dimensions for hauling these are 12 ft 5 inches wide, 14 ft 6 inches high and 80K with legal axle weights.
DOT COVID-19 information is available at
Welcome to Iowa's online permitting system (IAPS)
This site issues permits for oversize and overweight vehicles along state owned routes only. This includes Interstate, US, & IA routes. Permits for local or city routes should be obtained from those respective agencies. An oversize permit shall not be valid during the nighttime hours of sunset to sunrise unless authorized for continuous movement.
Holiday Travel Restrictions
An oversize/overweight permit shall not be valid for the operation of a vehicle on the following 2022 holidays:
- Noon Friday, May 27 to 30min before sunrise on Tuesday, May 31Independence Day
- Noon Friday, July 1 to 30min before sunrise on Tuesday, July 5Labor Day
- Noon Friday, September 2 to 30min before sunrise on Tuesday, September 6
Holiday Office Closings
The Iowa DOT permit office will be closed on the following dates. Permits may still be applied for and even system issued during these times; however, any office processing required will be delayed.
New Year's Eve - December 31, 2021
Martin Luther King, Jr. Day - January 17, 2022
Memorial Day - May 30, 2022
Independence Day - July 4, 2022
Labor Day - September 5, 2022
Veteran's Day - November 11, 2022
Thanksgiving - November 23-25, 2022
Christmas - December 23 and 26, 2022
New Year's Day - January 2, 2023
For any questions, please see the FAQ page which also contains our contact information. Normal business hours are Monday from 12:30pm to 4:30pm and Tuesday - Friday from 8:30am to 4:30pm central standard time.