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  2. Michigan State Trunkline Highway System - Wikipedia

    en.wikipedia.org/wiki/Michigan_State_Trunkline...

    MDOT assigns the numbers for a parallel system of county-designated highways in the state; the numbers are assigned in a grid system by the department. These highways, while signed from connecting trunklines and shown on the official MDOT map, are maintained by the various counties.

  3. List of state trunkline highways in Michigan - Wikipedia

    en.wikipedia.org/wiki/List_of_state_trunkline...

    Most of the following connectors are unsigned, [232] but they were inventoried publicly as part of the 6th edition of the Michigan Geographic Framework in 2006. [233] Up through the 7th edition, MDOT used a different numbering system, [234] which was changed in May 2008 with the publication of the 8th edition. [235]

  4. Wikipedia : WikiProject U.S. Roads/Michigan/Map database

    en.wikipedia.org/.../Michigan/Map_database

    Next Generation PR Finder (Map). Michigan Department of Transportation. ... Michigan (Map). 1 in:1.5 mi. Grand Rapids, MI: Kent County Road Commission.

  5. List of Interstate Highways in Michigan - Wikipedia

    en.wikipedia.org/wiki/List_of_Interstate...

    MDOT is the agency responsible for the day-to-day maintenance and operations of the State Trunkline Highway System, which includes the Interstate Highways in Michigan.. These highways are built to Interstate Highway standards, [6] meaning they are all freeways with minimum requirements for full control of access, design speeds of 50 to 70 miles per hour (80 to 113 km/h) depending on type of ...

  6. List of U.S. Highways in Michigan - Wikipedia

    en.wikipedia.org/wiki/List_of_U.S._Highways_in...

    MDOT is the agency responsible for the day-to-day maintenance and operations of the State Trunkline Highway System, which includes the U.S. Highways in Michigan.The numbering for these highways is coordinated through AASHTO, [6] an organization composed of the various state departments of transportation in the United States. [7]

  7. List of county-designated highways in Michigan - Wikipedia

    en.wikipedia.org/wiki/List_of_county-designated...

    After nearly a decade of efforts, the first two test highways were designated, one each in the Lower and Upper peninsulas of the state and included on the 1970 state highway map. The system was created and expanded in scope c. October 5, 1970, after it was approved by the County Road Association of Michigan and the State Highway Commission.

  8. Michigan Department of Transportation - Wikipedia

    en.wikipedia.org/wiki/Michigan_Department_of...

    The Michigan Department of Transportation (MDOT) is a constitutional government principal department of the US state of Michigan. The primary purpose of MDOT is to maintain the Michigan State Trunkline Highway System which includes all Interstate, US and state highways in Michigan with the exception of the Mackinac Bridge .

  9. M-43 (Michigan highway) - Wikipedia

    en.wikipedia.org/wiki/M-43_(Michigan_highway)

    The Michigan Department of Transportation (MDOT) maintains M-43 like all other state trunkline highways. As a part of those responsibilities, the department tracks the volume of traffic along its roadways using a metric called average annual daily traffic. This is a calculation of the traffic levels for a roadway segment for any average day of ...