Our goal is to keep Michigan's motorists safe, informed, and mobile. That is why MDOT offers many ways to help ease the stress of commuting by providing information that commuters want and need as they make daily travel decisions.
Did you know that millions of people visit the Great Lakes State every year? Whether you are from out of state or right here in Michigan, we want to ensure your travel throughout Michigan is informative, comfortable, and fun.
At MDOT, safety is paramount. It is our goal to improve overall safety for all road users, internal staff, contractors performing work on roads, and emergency responders.
Every year, MDOT produces an updated version of the state transportation map. The department also produces numerous geographic information system maps to assist commuters, tourists, and businesses.
In Michigan, there are three publicly-owned and operated bridges: Mackinac Bridge, Blue Water Bridge, and International Bridge. There are also two privately-owned and operated border crossings: Ambassador Bridge and Detroit-Windsor Tunnel.
A vibrant and sustainable multimodal transportation system is vital to Michigan's future economic viability and competitiveness. From aviation to public transportation, rail, freight, and marine, MDOT is involved in all modes of transportation.
MDOT's Office of Business Development (OBD) manages external civil rights programs, such as the Disadvantaged Business Enterprise (DBE) Program, the On-the-Job Training Program, and the Small Business Program, and ensures compliance with Title VI of the Civil Rights Act of 1964, equal opportunity requirements for contractors, and the Americans with Disabilities Act of 1990.
MDOT is committed to ensuring that projects, programs and services are performed without discrimination, under Title VI.
Contractors and vendors who work on federally assisted projects are required to establish and carry out policies to assure that applicants are employed and that employees are treated during employment without regard to their race, religion, sex, sexual orientation, gender identity, color, national origin, age, or disability.
The Bureau of Bridges and Structures is responsible for statewide policy, procedure development, and execution to ensure all bridges and structures are designed, constructed, maintained, and operated to ensure safety.
MDOT provides funding for competitive grant and loan programs primarily, but not exclusively, for state and local road agencies for the greatest impact on economic development and job creation.
MDOT's Highway Programs focus on the development and management of the department's roadsides, environmental efforts and policies, and federal-aid highway information.
The Bureau of Transportation Planning develops and implements a comprehensive transportation planning process which results in investments that are consistent with the policies of the State Transportation Commission.
Research Administration supports and promotes innovative research that encourages safe, sustainable and cost-effective transportation solutions throughout Michigan.
MDOT provides technologies and partnerships in order to make the transportation system safer and less congested.
MDOT has ongoing government-to-government communication with 12 federally recognized sovereign tribal governments whose lands are situated within Michigan.
The Office of Communications works with the media to inform the public of MDOT's mission, policies and practices in a positive, consistent and credible manner. The office is responsible for media relations, social media, and website development.
Public participation is integral to efficient, effective and responsive transportation decisions. At MDOT, we want to ensure your voice is not only heard, but makes a difference in moving Michigan forward.
Transportation Reality Check takes on transportation myths and misconceptions, and explains why MDOT does things the way they do.
Resources for the development of quality transportation project documents and services.
Resources for specialized engineering and technical support for construction staff.
Resources for prequalification, bid letting, contract awards, and payments.
Resources for consultant advisories, prequalification information, contracts, and proposals.
Resources for grant and economic development opportunities and project coordination.
Resources for local governmental agencies that regularly require access to state right of way.
Resources for MDOT real estate standards, policies and procedures, and training.
Resources for general work zone mobility guidelines for engineering and technical staff.
Resources for rules, guidelines, restrictions, and permits to safely transport goods.
Open data refers to data that has been officially classified as public that can be made freely available for everyone to use without credentials or restrictions. MDOT promotes transparency, innovation and informed decision-making by providing datasets classified as public freely available to everyone.
MDOT's goal is to support the implementation and use of GIS software and hardware through innovative solutions that solve spatial problems and support more informed decisions about Michigan's transportation infrastructure.
The technical training (TT) course schedule lists the various technical training courses offered through the Office of Organizational Development during the construction off-season months for the local agencies and consultants.
The Internship Program offers undergraduate and graduate students interested in civil engineering and construction management careers, valuable experience by working with professional field staff.
TRAC engages high school and middle school students in solving real-world problems, such as designing bridges or analyzing the environmental effects of building a highway.
The MDOT Transportation Career Pathways Program is committed to helping you build a fulfilling and rewarding career in the transportation industry, even if you're not entirely sure where to start.
MDOT's Engineer Development Program (EDP) is a rotational program that provides new engineers experience in multiple work areas while being assigned a senior-level mentor.
The Veteran Internship Program assists honorably discharged veterans of the United States Armed Forces as they transition into the civilian workforce.
Engineering Week videos and lesson plans are all-inclusive resources to show early elementary to high school students the career of civil engineering at MDOT.
At MDOT, we are here to help. If you can't find what you are looking for in our popular topics, frequently asked questions or website search, give us a call at 517-241-2400 or fill out our contact form.
MDOT's seven region offices each handle transportation-related construction, maintenance and programs within the region's geographic boundaries.
The Office of Policy and Government Relations represents MDOT's interests as new or amendatory legislation is developed or moving through the legislative process.
Commissions and councils provide a public forum for policy development and implementation.
Policies help the department implement its mission of serving and connecting people, communities, and the economy through transportation.
Allows MDOT's regions and engineers to expand their knowledge on how Michigan freeways are operating over time and how they compare to each other.
Search is currently unavailable. Please try again later.
The web Browser you are currently using is unsupported, and some features of this site may not work as intended. Please update to a modern browser such as Chrome, Firefox or Edge to experience all features Michigan.gov has to offer.
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.
Subscribe for weight restriction updates 
MDOT's Truck Operators Map shows the current all-season and seasonal truck routes.
FMCSA - Michigan Division
517-853-5990
Intrastate Operating Authority
517-284-3250, option 4 then option 1
Commercial driver's license (CDL)
888-767-6424
Michigan Trucking Association (MTA)
517-321-1951
Effective 12:00 p.m. on Thursday, March 20, 2025, weight restrictions will be lifted on all state trunkline highways from the southern Michigan border north to and including the following route beginning on M-43 at the BL-196 intersection in South Haven then east on M-43 to the US-131 Interchange in Kalamazoo County then south on US-131 to the I-94 Interchange then east on I-94 to the I-69 interchange in Calhoun County then north on I-69 to the I-96 interchange in Eaton County then east on I-96 to the M-59 interchange in Livingston County then east on M-59 ending at the I-94 interchange in Macomb County.
Frost restrictions are still in effect for the remainder of the state and will be imposed and enforced on all state trunkline highways north of the routes listed.
Spring weight restrictions map effective March 20
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.
More information on oversize/overweight permits
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.
Clearing temporary internet files and session cookies
For general permit questions, contact 517-241-8999 and select option 2.
MDOT Permit Gateway (MPG) is the portal for ordering/renewing permits.
For technical issues related to MPG passwords and logins, call 844-806-0002.
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.
Ban on hand held cellular phones
Bridge load posting processes and practices
Federal Motor Carrier Safety Administration
Maximum axle loadings in relation to tire size
Maximum truck loadings and dimensions
Michigan's truck-weight law and truck user fees
Moving mobile homes and building modules
Michigan Health & Human Services
Homeland Security Blue Campaign
If moving watercraft destined for any western state, the carrier shall contact Pacific States Marine Fisheries Commission's (PSMFC) Call Before You Haul hotline to make arrangements to have your watercraft inspected and if need be, decontaminated. This program aims to prevent aquatic invasive species spread.
Call 844-311-4873 or visit www.westernais.org/callbeforeyouhaul prior to hauling.
