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Iowa Frost Laws, Seasonal Load Weight and Speed Restrictions – 2021

Frost laws and Spring Thaw went into effect March 15, 2021


You can find your 2021 Road Restrictions Map here: https://iowadot.gov/mvd/motorcarriers/restrictionmap.pdf


You can also find other Road Restrictions Maps here: https://iowadot.gov/mvd/motorcarriers/maps


At the discretion of the Motor Carrier Services Division. Seasonal weight embargoes and temporary or permanent bridge weight limits must be signed and posted by the governing agency (jurisdiction). Editor's Note: Specific guidance on seasonal restrictions are vague, and it appears that operators must be alert for closures.

For information on restrictions, call the Iowa DOT, Motor Carrier Services, at 515-237-3264.

Information Guide, Iowa DOT:

https://www.iowadot.gov/mvd/motorcarriers/truckguide.pdf

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