Commercial Vehicles

Permits

For copies of permits required by the weighmaster please visit our permits section.

Axle Loading Information

Normal Loading Maximums

  • 18,000 pounds on single axles spaced 9 feet or more apart
  • 13,000 pounds on tandem axles spaced 3.5 feet to 9 feet apart
  • 9,000 pounds on axles separated by less than 3.5 feet
  • 13,000 pounds per axle maximum, tri-axle and multi-axles

Designated Loading

16,000 pounds per axle on one tandem axle assembly.

Seasonal Restriction Loading Maximums

35% Reduction of Normal Loading Per Axle (as follows):

  • 11,700 pounds on single axles spaced 9 feet or more apart
  • 8,450 pounds on tandem axles spaced 3.5 feet to 9 feet apart
  • 5,850 pounds on axles separated by less than 3.5 feet
  • 8,450 pounds per axle maximum, tri-axle and multi-axles
  • 35 miles per hour maximum speed limit

All-Season Road Loading Maximums

  • 18,000 pounds on single axles spaced 9 feet or more apart
  • 16,000 pounds on tandem axles spaced 3.5 feet to 9 feet apart
  • Only one tandem axle assembly permitted at 32,000 pounds., no other tandem axle assembly shall exceed 26,000 pounds
  • 9,000 pounds on axles separated by less than 3.5 feet
  • 13,000 pounds per axle maximum, tri-axles and multi-axles

Weight determinations are based on axle configuration in the

Michigan Truck Safety Department publication "Truck Driver's Guidebook"

Preserving County Roads -- Berrien County Frost Laws Take Effect March 11th 2019 at 6AM

Frost laws take effect on Monday, March 11th 2019 at 6:00AMthis year. 

Berrien County along with other Southwestern Michigancounties are activating annual frost laws to protect roads. Enacting Frost Lawsin the Spring helps preserve the condition of the roadway. Road surfaces cancrack and develop stress fractures in reaction to too much weight being placedupon the surfacing during this time. The length that frost laws are in effectis determined based upon weather conditions.

When conditions justify the need for frost laws, the MichiganDepartment of Transportation (MDOT) and county road agencies enact weightrestrictions on roadways that are not designated as all-season routes.Additional details of seasonal restrictions can be found in Section 257.722 ofthe Michigan Vehicle Code, Act 300 of 1949. There are a few exemptions allowedfor those hauling agricultural commodities and public utility vehicles. 

The County Road Association of Michigan online provides anupdate of current weight restrictions in each county across the state ofMichigan. For the most up-to-date information on weight restrictions on stateroads, visit Michigan Department of Transportation (MDOT) 

Following frost laws help maintain and protect roads fromgreater deterioration during this weather shift. 

In additional to weight restrictions, there will also be aspeed restriction set of 35mph. 

For more information for Berrien County contact the BerrienCounty Road Department Offices. To submit permit paperwork orpayment you can do so online or in person at the Berrien County Road Departmentlocated at 2860 E. Napier Ave, Benton Harbor, MI 49022. Office hours are Monday– Friday 7:30am until 4pm. 

Historic Frost Law Seasons

Year Start Date
End Date
1977 Feb. 24
Unknown
1978 Unknown
May 1
1979 Feb. 28
April 25
1980 Unknown April 23
1981 Feb. 18
April 1
1982 Feb. 24
April 22
1983 Feb. 21
Unknown
1984 Feb. 14
Unknown
1985 Feb. 25
March 29
1986 Unknown April 3
1991 Feb. 5
Unknown
1995 Unknown April 3
1999 Unknown March 22
2002 Jan. 23
March 25
2003 March 3
April 7
2004 Feb. 26
March 29
2005 Feb. 21
April 8
2006 No Frost Laws
No Frost Laws
2007 March 1
April 2
2008 Feb. 25
April 9
2009 Feb. 9
March 30
2010 Feb. 26
March 24
2011 Feb. 14
April 1
2012 Feb. 13
March 12
2013 Feb. 25
April 8
2014 March 12
April 17
2015 March 10
April 6
2016 No Frost Laws
No Frost Laws
2017
No Frost Laws
No Frost Laws
2018 Feb. 19
March 23
2019 March 11
TBD