Ohio Frost Laws & Spring Thaw Limits

How Ohio handles spring thaw

Ohio law says weight limits shall drop when thaw or moisture leaves a road unable to bear traffic (ORC 5577.07), and the county commissioners set the cut, capped at 50%. There's no statewide ODOT frost map. County engineers and townships post their own roads, mostly late February into spring, re-declared each year. Interstates and most state routes stay unposted. The roadside sign is the limit, so check the county engineer for the local roads at both ends.

Window, reduction, and where to check

• Season: Set locally as roads thaw, typically late February through spring and re-declared every year. ODOT runs no statewide declared program; county engineers and townships post their own roads.
• Reduction: By statute the maximum weight, and sometimes speed, shall be reduced when thaw or moisture leaves a road unable to bear traffic (ORC 5577.07). On county and township roads the board of county commissioners sets the cut, capped at 50%, and files the schedule. The posted sign is the limit; Interstates and most state routes aren't posted.
• Interstates: Exempt from the seasonal reduction
• Find the current order: There's no statewide ODOT frost map. Check the county engineer's office and township trustees for the local roads at each end; many county engineers publish their seasonal load reductions. The roadside posted limit controls.
• Overweight penalty: Ohio overweight penalties run on a per-overload scale with a $100 minimum on a gross-weight violation, climbing to $160 plus $3 per 100 lb once you're more than 10,000 lb over (ORC 5577.99). A posted seasonal limit is enforced as an overweight violation.

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