Michigan Department of Transportation (MDOT)
The Michigan Department of Transportation (MDOT) is a state government agency responsible for maintaining Michigan's extensive transportation infrastructure, including the State Trunkline Highway System (which excludes the Mackinac Bridge), airports, shipping, and rail.
History:
MDOT's predecessor, the Michigan State Highway Department (MSHD), was established in 1905 to oversee road construction and maintenance. In the early 20th century, Michigan pioneered many road innovations, including the first concrete roadway (1909), centerline (1911), and stop sign (1917). During World War II, MDOT built Michigan's first freeways, which became part of the Interstate Highway System.
Reorganization and Expansion:
In the 1960s, MDOT underwent a major reorganization that consolidated all transportation functions into a single agency. This included responsibilities for aviation, railroads, and non-motorized pathways. In 1973, MDOT's name was changed to the Michigan Department of State Highways and Transportation.
Structure and Leadership:
MDOT is led by a six-member State Transportation Commission appointed by the governor. The department is divided into seven regional offices and several divisions, including:
- Aeronautics and Freight Services
- Highway Research, Design, and Construction
- Passenger Transportation
- Finance
- Transportation Planning
Transportation System:
MDOT maintains a vast network of roads, bridges, airports, and rail lines throughout Michigan. Notable projects include the Mackinac Bridge, the Detroit-Windsor Tunnel, and the Grand Rapids Gerald R. Ford International Airport. MDOT also provides subsidies to Amtrak train services in the state.