Summary#
House Bill 6428 would amend section 722 of Michigan’s Vehicle Code, which sets vehicle weight limits and seasonal road restrictions. It appears to temporarily raise some weight limits for agricultural loads and remove certain notice and permit requirements; its stated goal is not given in the supplied material. The bill is introduced and is not law.
- For agricultural commodities, the bill would temporarily allow a gross vehicle weight of up to 90,000 pounds under the limits in subsection 12, instead of 80,000 pounds.
- It would temporarily raise certain axle-load limits by 15% for agricultural commodities or raw timber hauled from a farm or harvest site to a first delivery point. Farm equipment and fuel are excluded from this increase.
- For a limited period, agricultural haulers who pick up or deliver commodities from or to a farm would not have to meet the notice, fee, and permit requirements otherwise described for an exemption from seasonal weight reductions.
- For that same temporary period, the bill would remove the rule that blocks the 15% axle-load increase on interstate highways.
What it means for you#
- Agricultural haulers: The bill would allow some heavier loads and, temporarily, remove notice and permit requirements tied to seasonal weight restrictions. The higher axle limits apply only to the types of loads and trips described in the bill. The 90,000-pound limit is temporary.
- Raw timber haulers: The temporary 15% axle-load increase would apply to qualifying trips from the harvest site to the first delivery point. It would not raise the separate gross vehicle weight limit for those trips.
- County road commissions: The temporary waiver would remove the stated permit, fee, and notice requirements for qualifying agricultural hauls. The bill does not say what other steps a commission may take to protect a particular road.
- Other drivers and the public: The bill does not change ordinary vehicle weight limits for all vehicles. It does not create a new agency or change fines or enforcement powers.
Money#
No cost information is in the available material.
- County road commissions would not collect the specified permit fees during the temporary waiver period. The amount of any lost fee revenue is not stated.
- The bill gives no estimate of public costs, staff time, or road repair costs.
What is unclear#
- The supplied bill text has no markup showing all additions and deletions, and the current version of the Vehicle Code was not supplied separately. The exact changes against current law cannot be fully verified.
- The bill refers to a period ending December 1, 2026, but does not state an effective date in the supplied text. It is unclear when the temporary rules would begin or whether they could take effect before that date.
- The bill does not clearly explain how the temporary axle-load increase interacts with seasonal road restrictions, including when a road is still formally under those restrictions.
- The text does not specify what road limits apply to the heavier loads on each route, beyond the existing designation and load-limit rules.
Case for#
- A possible argument for the bill is that heavier agricultural loads could let haulers move commodities with fewer trips.
- Removing notice and permit requirements temporarily could reduce paperwork and delay for eligible farm-related trips.
- Allowing the temporary axle-load increase on interstate highways could give haulers more route options.
Case against#
- Higher loads may put more strain on roads and bridges; the bill does not estimate or fund any related repair costs.
- Removing notice and permit requirements could leave county road commissions with less advance information about some heavy agricultural loads.
- The temporary rules’ start date and their overlap with seasonal restrictions are unclear, making it harder for haulers and road authorities to know which limits apply.