County Road Association of Michigan
County Road Association of Michigan
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  • Seasonal Weight Restrictions

    Seasonal weight restrictions were enacted in order to help minimize the impact of heavy trucks on Michigan's roads during the Spring cycle of freezing and thawing. By law, road agencies can enact weight restrictions on roads that are not designated as all-season routes when conditions merit.
    Seasonal restrictions lower the axle-loading limits and reduces the maximum travel speed for certain vehicles. Details about seasonal weight restrictions and their effect on axle loading and speed can be found by clicking here for the full text of MCL 257.722. There are some limited classes that are exempt from these restriction after a permit is filed. Please see below for more detail on the Permitting requirements and exempt classes by clicking here.

    Current Conditions

    Last Modified 5-27-15
    Weight Restriction Status will next be updated once the season starts in 2015 (Typically late-February).

    Click For information on State Trunkline restrictions.

    County In Effect Roads
    Alcona No List
    Alger No Online
    Allegan No List
    Alpena No List
    Antrim No List
    Arenac No List
    Baraga Partial List
    Barry No List
    Bay No N/A


    Berrien No List
    Branch No List
    Calhoun No List
    Cass No N/A
    Charlevoix No List
    Cheboygan No N/A
    Chippewa No List
    Clare No List
    Clinton No List
    Crawford No List
    Delta No List
    Dickinson No List
    Eaton No List
    Emmet No List
    Genesee No List
    Gladwin No List


    Gd. Traverse No List
    Gratiot No List
    Hillsdale No List
    Houghton Yes List
    Huron No N/A
    Ingham No List
    Ionia No List
    Iosco No List
    Iron Partial List
    Isabella No List
    Jackson No List
    Kalamazoo No List
    Kalkaska No List
    Kent No N/A
    Keweenaw Yes List
    Lake No List
    Lapeer No List
    Leelanau No List
    Lenawee No List
    Livingston No List
    Luce No List
    Mackinac No List
    Macomb No List
    Manistee No List
    Marquette No N/A
    Mason No List
    Mecosta No List
    Menominee No List
    Midland No N/A
    Missaukee No List


    Montcalm No List
    Montmorency No List
    Muskegon No List
    Newaygo No List
    Oakland No List
    Oceana No N/A
    Ogemaw No List
    Ontonagon No List
    Osceola No List
    Oscoda No List
    Otsego No List
    Ottawa No N/A
    Presque Isle No List
    Roscommon No List
    Saginaw No List
    Sanilac No List
    Schoolcraft No List
    Shiawassee No List
    St. Clair No List
    St. Joseph No List
    Tuscola No List
    Van Buren No List
    Washtenaw No Online
    Wayne No List
    Wexford No List

    For the list at the left, the following codes are used:
    No - Restrictions are not in effect

    Effective - Restrictions will be in effect as of that date

    Partial - Restrictions are in effect for portions of the county

    Until - Restrictions will generally be lifted before 9am on the date indicated
    If you are travelling on this date, please call the road commission to verify ending times.

    Unknown - No information has been provided by the county
    Jump to a County A - B - C - D - E - G - H - I - J - K - L - M - N - O - P - R - S - T - V - W

    Click on County name for contact information.

    Current Frost Law Status

    On the map above, the following colors are used to reflect status:
    Green - no seasonal restrictions in effect
    Red - indicates restrictions are in effect
    Grey - restrictions are in effect in part of the county
    Yellow - restriction status is unknown
    As this information is subject to change, it may be wise to call to verify status before proceeding.


    257.722(5) The exception to the loading maximums and gross vehicle weight requirements of subsection (11) under subsection (7) for a person hauling agricultural commodities or a public utility vehicle applies only if the person who picks up or delivers the agricultural commodity either from a farm or to a farm or the public utility notifies the county road commission for roads under its authority not less than 48 hours before the pickup or delivery of the time and location of the pickup or delivery. The county road commission shall issue a permit to the person or the public utility and charge a fee that does not exceed the administrative costs incurred. The permit shall contain the following: (a) The designated route or routes of travel for the load. (b) The date and time period requested by the person who picks up or delivers the agricultural commodities or the public utility during which the load may be delivered or picked up. (c) A maximum speed limit of travel, if necessary. (d) Any other specific conditions agreed to between the parties.

    Milk Hauler Exemption

    257.722(8) The state transportation department for roads under its jurisdiction and a county road commission for roads under its jurisdiction may grant exemptions from seasonal weight restrictions for milk on specified routes when requested in writing. Approval or denial of a request for an exemption shall be given by written notice to the applicant within 30 days after the date of submission of the application. If a request is denied, the written notice shall state the reason for denial and alternate routes for which the permit may be issued. The applicant shall have the right to appeal to the state transportation commission or the county road commission. These exemptions shall not apply on county roads in counties that have negotiated agreements with milk haulers or haulers of other commodities during periods of seasonal load limits before April 14, 1993. This subsection does not limit the ability of these counties to continue to negotiate such agreements.

    Agricultural Commodities Defined

    257.722(12) As used in this section, ?agricultural commodities? means those plants and animals useful to human beings produced by agriculture and includes, but is not limited to, forages and sod crops, grains and feed crops, field crops, dairy and dairy products, poultry and poultry products, cervidae, livestock, including breeding and grazing, equine, fish, and other aquacultural products, bees and bee products, berries, herbs, fruits, vegetables, flowers, seeds, grasses, nursery stock, mushrooms, fertilizer, livestock bedding, farming equipment, and fuel for agricultural use. The term "agricultural commodities" shall not include trees and lumber.

    Public Utlity Vehicle Defined

    The definition of a Public Utility Vehicle is taken from MCL 460.501. Click here for the complete text of MCL 460.501
    MCL 460.501 The term "public utility", when used in this act, means persons and corporations, other than municipal corporations, or their lessees, trustees and receivers now or hereafter owning or operating in this state equipment or facilities for producing, generating, transmitting, delivering or furnishing gas or electricity for the production of light, heat or power to or for the public for compensation.

    To report seasonal weight restrictions, click here to email us.

    Michigan's county road agencies are working to improve roads to accommodate
    commercial vehicles, but increasing costs and declining
    revenues delay these costly improvements. To learn more about
    county road agency's funding needs, click here

    Questions or suggestions? Click here to e-mail us
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