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The first of these revised assignments were shown on the 1971 state highway map; A-2 retained its number but B-1 was renumbered to H-40 in the Upper Peninsula. [6] Earl Rogers, the engineer-director of the County Road Association of Michigan stated at the time that the county road commissions would gradually phase in signage over the coming years.
The first state road agency, the Michigan State Highway Department (MSHD), was created on July 1, 1905. At first the department administered rewards to the counties and townships for building roads to state minimum specifications. In 1905, there were 68,000 miles (110,000 km) of roads in Michigan.
National Highway System, Michigan (PDF) (Map). Scale not given. Lansing: Michigan Department of Transportation ... Road Map of Kent County, Michigan (Map) ...
The north–south highways range from the low 20s into the 40s. There are also three three-digit highways numbered in the 100s and one in the 200s as branches of related two-digit highways. [8] In Michigan, the US Highway System covers about 2,300 miles (3,701 km) of mainline highways and another 160 miles (257 km) of special routes. [3]
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 ...
Part of Dix–Toledo Highway; labeled "I-75 connector" on state maps; previously part of US 25 and later Connector 3 [234] Connector 25: 0.265: 0.426 BL I-69/BL I-94 in Port Huron: M-25 in Port Huron 1973 [240] current Labeled "I-94 connector" on state maps; previously part of US 25 [240] and later Connector 13 [234] Connector 30: 0.629: 1.012
In between, the mostly rural highway passes through farmland and connects several highways and smaller towns together. Three of these highways are freeways: US 131, US 127 and Interstate 75 (I-75). Along the way, between 3,700 and 22,300 vehicles use the highway daily. The current highway that bears the M-57 moniker is the second to do so.
This figure is a calculation of the traffic level along a segment of roadway for any average day of the year. In 2009, the MDOT surveys found that the highest traffic levels along M-72 were the 33,720 vehicles per day in Traverse City. The lowest AADT was 807 vehicles near Hubbard Lake Road in Alcona County near Lincoln.