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A semi truck traveling westbound I-196 in Allegan County.
Department of Transportation


As Michigan's economy continues to grow over the next few years, trucking will remain an important piece in our transportation network.

To ensure infrastructure and motorist safety, our truckers page provides all the necessary rules, guidelines, restrictions, and permits, needed to safely transport goods throughout Michigan.

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MDOT's Truck Operators Map shows the current all-season and seasonal truck routes. 

View Truck Operators Map

Trucking Contacts

FMCSA - Michigan Division

Intrastate Operating Authority
517-284-3250, option 4 then option 1

Commercial Driver's License (CDL)

Michigan Trucking Association (MTA)

Spring Weight Restrictions

Effective 6 a.m. Friday, Feb. 16, weight restrictions will be lifted on all state trunkline highways from the southern Michigan border north to and including US-2/US-141 at the Menominee River bridge west of Iron Mountain then east on US-2 to St. Ignace. 

State trunkline highways typically carry M, I, or US designations. Weight restriction information and updates may be obtained by calling 1-800-787-8960. For companies located in Canada or New Jersey, information may be obtained by calling 517-335-0023.

  • On routes designated as "All Season Routes" (green or gold on the MDOT Truck Operators Map) there will be no reduction in legal axle weight.
  • On routes designated as "Seasonal" (solid or dashed red on the MDOT Truck Operators Map) there will be a weight reduction of 25% for rigid pavements and 35% for flexible pavements.

Spring Weight Restrictions Map

Spring Weight Restriction Bulletins

MiTRIP - Overweight/Oversize Permits

The Michigan Transport Routing and Internet Permitting System (MiTRIP) allows applicants to order oversize/overweight single trip and extended permits to travel on state and federal highways in Michigan. Registration must be done through MPG using a credit/debit card or electronic fund transfer (e-Check, business check) with bank accounts in the United States.

MPG/MiTRIP Registration Instructions:
Existing Business and Permit Services 
Business with Existing Extended Permits
Once a company is registered, Delegated Business Authority can be used to give access to all other users in the company.

User Guides:
Single Trip Permit 
Extended Trip Permit
Clearing Temporary Internet Files and Session Cookies

For general permit questions, contact 517-241-8999 and select option 2.

Transport Permit Forms

MDOT Permit Gateway logo

Permit Gateway

The MDOT Permit Gateway (MPG) is the portal for ordering and renewing permits. For technical issues related to MPG passwords and login assistance, call 844-806-0002.

Permit Gateway

Know the Height of Your Load

Vehicle/bridge collisions result in serious injuries, significant property damage, and major congestion problems.

Permits are required for objects or vehicles over 13' 6" in height.

Questions? Contact your local county road commission or MDOT Permits Unit at 517-241-8999.

Know the Height of Your Load Poster

Trucker Information