A single unit truck with three or four axles in a group in the rear will be allowed to exceed maximum gross axle weight of 48,000 pounds with an approved equipment permit, provided it meets the following requirements:
- Distance from the center of the steering axle to the center first axle of the 3 or 4 axle group is 14 feet or more.
- All axles in the 3 or 4-axle group must have dual tires except that a super single tire must be a minimum of 14 inch or 355 mm tire width.
- The gross weight of the 3 or 4-axle group may not exceed 51,000 pounds.
- No axle in the group shall exceed 19,000 pounds.
- No tire shall exceed 550 pounds per inch of tire width.
- The steering axle shall have a tire width of 12 inches or larger
- No tire shall exceed 550 pounds per inch of tire width.
- Gross vehicle weight shall not exceed 64,000 pounds.
- Axle weights shall be reduced when travel is on Class 3 and Class 4 highways, as shown on the Permit Bridge Load Limitations Map (9-2 A)
- No travel on the interstate system.
- During spring thaw and on highways with load limits year around, axle weights shall be reduced.
- Permit cannot be used in conjunction with any other weight exemption permit.
- The permit is valid for 365 days.
- The fee is $15.