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 3-16-15
    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 Yes List
    Alger Yes Online
    Allegan Yes List
    Alpena Yes List
    Antrim Yes List
    Arenac Yes List
    Baraga Yes List
    Barry Yes List
    Bay Yes N/A


    Berrien Yes List
    Branch Yes List
    Calhoun Yes List
    Cass Yes N/A
    Charlevoix Yes List
    Cheboygan Yes N/A
    Chippewa Yes List
    Clare Yes List
    Clinton Yes List
    Crawford Yes List
    Delta Yes List
    Dickinson Yes List
    Eaton Yes List
    Emmet Yes List
    Genesee Yes List
    Gladwin Yes List


    Gd. Traverse Yes List
    Gratiot Yes List
    Hillsdale Yes List
    Houghton Yes List
    Huron Yes N/A
    Ingham Yes List
    Ionia Yes List
    Iosco Yes List
    Iron Yes List
    Isabella Yes List
    Jackson Yes List
    Kalamazoo Yes List
    Kalkaska Yes List
    Kent Yes N/A
    Keweenaw Yes List
    Lake Yes List
    Lapeer Yes List
    Leelanau Yes List
    Lenawee Yes List
    Livingston Yes List
    Luce Yes List
    Mackinac Yes List
    Macomb Yes List
    Manistee Yes List
    Marquette Yes N/A
    Mason Yes List
    Mecosta Yes List
    Menominee Yes List
    Midland Yes N/A
    Missaukee Yes List


    Montcalm Yes List
    Montmorency Yes List
    Muskegon Yes List
    Newaygo Yes List
    Oakland Yes List
    Oceana Yes N/A
    Ogemaw Yes List
    Ontonagon Yes List
    Osceola Yes List
    Oscoda Yes List
    Otsego Yes List
    Ottawa Yes N/A
    Presque Isle Yes List
    Roscommon Yes List
    Saginaw Yes List
    Sanilac Yes List
    Schoolcraft Yes List
    Shiawassee Yes List
    St. Clair Yes List
    St. Joseph Yes List
    Tuscola Yes List
    Van Buren Yes List
    Washtenaw Yes Online
    Wayne Yes List
    Wexford Yes 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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