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About Us

A red MDOT work truck with the department logo on the door.
Department of Transportation

About Us

The Michigan Department of Transportation (MDOT) is responsible for Michigan’s nearly 10,000-mile state highway system, comprised of all M, I, and US-routes. It is the backbone of Michigan’s 120,000-mile highway, road and street network.

The state owns over 4,700 highway, railroad and pedestrian bridges, 665 miles of railroad track, roughly 2,700 miles of nonmotorized trails, and four airports. Additionally, MDOT administers state and federal transportation programs for aviation, intercity passenger services, rail freight, and local public transit services.

MDOT is committed to:

  • Serving residents and local communities with the highest level customer service.
  • Improving transportation for all modes.
  • Implementing new safety strategies to protect public health and environment.  
  • Seeking new ways to operate equitably, inclusively, and efficiently.
  • Creating a transportation system that is safe, integrated, and resilient

Connect with us

Michigan Department of Transportation
425 W. Ottawa St.
P.O. Box 30050
Lansing, MI 48933
Locate Us


Contact MDOT
MDOT Organization (PA 370)
State of Michigan Employee Directory

About MDOT

Official Guide to MDOT
MDOT Fast Facts
Road Terms & Definitions

Mission: Serving and connecting people, communities, and the economy through transportation.

Vision: To provide people with a safe, future-driven, interconnected multimodal transportation network that ensures equitable options.

Values: Visionary - Ensuring Positive Outcomes - People First - Professional Excellence - Diversity, Equity, and Inclusion - Character and Integrity

MDOT Strategic Plan

WB I-196 in Allegan County.


MDOT's seven region offices each handle transportation-related construction, maintenance and programs within the region's geographic boundaries.

MDOT Regions
A yellow Share the Road bicycle sign on a quiet road.


Policies help the department implement its mission of serving and connecting people, communities, and the economy through transportation.

The State of Michigan capitol building.

Governmental Affairs

MDOT's Office of Governmental Affairs represents the department's interests as new or amendatory legislation is developed or moving through the legislative process.

Governmental Affairs
Commissioners at Michigan Aeronautics Commission meeting in Port Huron

Commissions, Councils, Task Forces, and Partnerships

Responsible for establishing policies, supervising programs, overseeing state and federal funds, and acting as a resource.  

Streaking vehicle lights on roadway at dark

Transportation System Performance

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.