In Michigan, the arrival of spring doesn’t just mean melting snow—it means the return of the “Frost Laws.” Every year, usually starting in March, the Michigan Department of Transportation (MDOT) enacts seasonal weight restrictions to protect our infrastructure.
To move heavy equipment during this window, “business as usual” isn’t an option. At Gelock Heavy Movers, we specialize in navigating these restrictions to keep your projects moving without damaging the roads or facing steep fines.
Why the Roads “Soften” in Spring
As temperatures rise during the day and dip below freezing at night, the ground undergoes a constant cycle of expansion and contraction. When the frost begins to melt from the surface down, water becomes trapped between the pavement and the still-frozen ground below. This creates a “spongy” layer that significantly weakens the road’s structural integrity. Placing a standard heavy load on this surface during the thaw causes immediate damage, leading to the deep potholes and cracks Michigan drivers know all too well.
The Gelock Solution: The 10-Axle “Jeep” Setup
While many haulers park their rigs until the ground stabilizes, Gelock Heavy Movers uses specialized equipment to meet legal axle weights even during the height of the restrictions.
To transport a CAT excavator and its attachments during the spring, we utilize a 10-axle configuration featuring a lowboy trailer with a “jeep” setup.
- Weight Distribution: By spreading the load across 10 axles instead of the standard 5, we reduce the pressure on any single point of the pavement.
- Hauling Capacity: This setup allows us to haul up to 70,000 lbs while remaining within the strict per-axle limits mandated by the state during the restricted period.
- Legal Compliance: Michigan law limits single axles to roughly 13,000 lbs under normal conditions, but these can be reduced on seasonal roads during the thaw. Our 10-axle rig ensures every tire meets these reduced requirements.

Monitoring the Scales
Weigh stations operate year-round to ensure every vehicle on the road is safe and compliant. During the spring, enforcement is even more critical.
- No Overweight Permits: It is important to note that MDOT typically does not issue overweight permits while spring restrictions are in effect.
- Strict Regulations: This means your load must be “legal” weights from the moment it leaves the yard.
Plan Your Move with Gelock
Don’t let the spring thaw stall your site work. By understanding road classifications—distinguishing between “All-Season” routes (which have no weight reductions) and “Seasonal” routes—Gelock Heavy Movers can map out a path that keeps your equipment moving legally.
For the latest updates on when restrictions are active or lifted, you can check the MDOT Truck Operators Map or contact us directly at Gelock Heavy Movers to plan your next heavy haul.





