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Michigan Department of Transportation

Michigan Department of Transportation
MichiganDOT.svg
MDOT Logo
Department overview
Formed July 1, 1905 (1905-07-01)
Preceding department
  • Michigan Department of State Highways
Superseding agency
  • Incumbent
Jurisdiction State of Michigan
Headquarters 425 West Ottawa Street
Lansing, Michigan 48909
42°44′01″N 84°33′31″W / 42.7336°N 84.558523°W / 42.7336; -84.558523Coordinates: 42°44′01″N 84°33′31″W / 42.7336°N 84.558523°W / 42.7336; -84.558523
Annual budget $3.3 Billion
Department executives
  • Kirk T. Steudle, Director
  • Todd Wyett, Transportation Commission Chair
Key document
Website www.michigan.gov/mdot

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. Other responsibilities that fall under MDOT's mandate include airports, shipping and rail in Michigan.

The predecessor to today's MDOT was the Michigan State Highway Department (MSHD) that was formed on July 1, 1905 after a constitutional amendment was approved that year. The first activities of the department were to distribute rewards payments to local units of government for road construction and maintenance. In 1913, the state legislature authorized the creation of the state trunkline highway system, and the MSHD paid double rewards for those roads. These trunklines were signed in 1919, making Michigan the second state to post numbers on its highways. The department continued to improve roadways under its control through the Great Depression and into World War II. During the war, the state built its first freeways. These freeways became the start of Michigan's section of the Interstate Highway System. Since the mid-1960s, the department was reorganized. It was renamed the Michigan Department of State Highways for a time. Further changes culminated in adding all modes of transportation to the department's portfolio. In August 1973, the department was once again renamed to the Michigan Department of State Highways and Transportation by executive order. The name was later simplified and shortened to that of today.

The first State Highway Department was created on July 1, 1905. The department was born out of the Good Roads Movement at the turn of the century. Bicycle enthusiasts as a part of the League of American Wheelmen pushed for better roads and streets. They also wanted to ensure that bicyclists could use these streets and roads free from interference from horsedrawn vehicles. This movement persuaded the Michigan State Legislature to form a State Highway Commission in 1892. Another law in 1893 allowed voters in each county to establish county road commissions. The attention of Michigan residents was turned to the good-roads movement by Horatio S. Earle, the first state highway commission. In 1900 he organized the first International Road Congress in Port Huron and even put together a tour of a 1-mile (1.6 km) macadam road. He even ran for the state senate in 1900 at the urging of the Detroit Wheelmen bicycle club. The legislature set up a state reward system for highways and created the State Highway Department with an office of Highway Commissioner. Earle was appointed by Governor Aaron Bliss. This appointment and department were voided when the attorney general ruled the law unconstitutional. A constitutional amendment was passed in 1905 to reverse this decision. The department was formed, and Earle was appointed commissioner by Governor Fred M. Warner on July 1, 1905.


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