List of state trunkline highways in Michigan explained

State Trunkline Highway System
Shields:	State: MI Type: M 1919 Route: 12 State: MI Type: M 1926 Route: 7 State: MI Type: M 1948 Route: 76 State: MI Type: M Route: 28
Caption:	Highway markers from different years for former M-12 (1919), former M-7 (1926), former M-76 (1948), and current M-28
Maint:	MDOT
Formed:	May 13, 1913,^[1] signed by July 1, 1919
Length Mi:	5976.147
Length Ref:	^[2]
Length Notes:	Plus 14.775miles of special routes and 24.079miles of unsigned connectors
Statehwy:	M-nn
Label1:	Special Routes
Field1:	Alternate M-nn (Alt. M-nn or M-nnA) Business M-nn (Bus. M-nn) Bypass M-nn (Byp. M-nn) Connector M-nn (Conn. M-nn) Truck M-nn (Truck M-nn)
Links:	MI

The state trunkline highways in the US state of Michigan are the segments of the State Trunkline Highway System maintained by the Michigan Department of Transportation and numbered with the "M-" prefix officially.__TOC__

Connectors

Most of the following connectors are unsigned, but they were inventoried publicly as part of the 6th edition of the Michigan Geographic Framework in 2006.^[3] Up through the 7th edition, MDOT used a different numbering system,^[4] which was changed in May 2008 with the publication of the 8th edition.^[5] The years below note when each connector was established as an individual component of the highway system.

References

Works cited

• Book: Barnett, LeRoy . 2004 . A Drive Down Memory Lane: The Named State and Federal Highways of Michigan . Allegan Forest, MI . Priscilla Press . 1-886167-24-9 . 57425393 .
• 1919-07-01 . yes . . Upper Peninsula and Lower Peninsula sheets .
• 1924-09-15 . . 3 .
• 1925-09-01 . . 3 .
• 1926-12-01 . . 3 .
• 1927-11-01 . . 3 . a.
• 1927-12-01 . . 3 . b.
• 1928-05-01 . . 3 . a.
• 1928-09-01 . . 3 . b.
• 1929-05-01 . . 3.
• 1930-01-01 . yes . . 3 . a.
• 1930-07-01 . . 3 . b .
• 1930-11-01 . . 3 . c .
• 1931-05-15 . . 3 . a .
• 1931-07-01 . . 3 . b .
• 1931-10-01 . . 3 . c .
• 1932-04-01 . . 3 . a.
• 1932-10-01 . . 3 . b.
• 1933-05-01 . yes . . 3 . a.
• 1933-07-01 . . 3 . b.
• 1933-09-01 . . 3 . c.
• 1934-05-01 . . 3 . a .
• 1934-07-01 . . 3 . b.
• 1934-09-01 . . 3 . c.
• 1935-07-15 . . 3 . a.
• 1935-09-15 . . 3 . b.
• 1935-12-01 . . 3 . c.
• 1936-06-01 . . 3 . a.
• 1936-12-15 . . 3 . b.
• 1937-05-15 . . 3 . a .
• 1937-12-01 . . 3 . b.
• 1938-05-01 . . 3 . a.
• 1938-12-01 . . 3 . b.
• 1939-04-15 . . 3 . a.
• 1939-12-01 . . 3 . b.
• 1940-04-15 . . 3 . a .
• 1940-07-15 . . 3 . b.
• 1940-12-01 . . 3 . c.
• 1941-03-21 . . 3 . a .
• 1941-07-01 . . 3 . b .
• 1941-12-01 . . 3 . c .
• 1942-06-01 . . 3.
• 1943-06-01 . . 3.
• 1945-06-01 . . 3 . a.
• 1945-10-01 . . 3 . b.
• 1948-07-01 . . 3 . b.
• 1949-04-01 . . 3 . a.
• 1949-07-01 . . 3 . b.
• 1950-04-15 . . 3 . a.
• 1950-07-01 . . 3 . b.
• 1953-04-15 . . 3 . a.
• 1953-10-01 . . 3 . b.
• 1954-04-15 . . 3 . a.
• 1954-10-01 . . 3 . b.
• 1955-04-15 . . 3 . a.
• 1955-10-01 . . 3 . b.
• 1956-04-15 . . 3 . a.
• 1956-10-01 . . 3 . b.
• 1957-04-15 . . 3 . a.
• 1957-10-01 . . 3 . b.
• 1958 . . 3.
• 1960 . . 3.
• 1961 . . 3.
• 1962 . . 3.
• 1963 . . 3.
• 1964 . . 3.
• 1965 . . 3.
• 1966 . . yes .
• 1967 . . 3.
• 1968 . . 3.
• 1969 . . 3.
• 1970 . . 3.
• 1971 . . 3.
• 1972 . . 3.
• 1973 . . 3.
• 1974 . yes . .
• 1975 . . 3.
• 1976 . . 3.
• 1977 . . 3.
• 1978 . . 3.
• 1979 . . 3.
• 1980 . yes . .
• 1981 . . 3.
• 1982 . . 3.
• 1983 . . 3.
• 1984 . . 3.
• 1985 . . 3.
• 1986 . . 3.
• 1987 . . 3.
• 1988 . . 3.
• 1989 . . 3.
• 1990 . . 3.
• 1991 . . 3.
• 1992 . . 3.
• 1993 . . 3.
• 1995 . . 3.
• 1996 . . 3.
• 1997 . . 3.
• 1998 . . 3.
• 1999 . . 3.
• 2000 . . 3.
• 2001 . . 3.
• 2002 . . 3.
• 2003 . . 3 . a .
• 2003T . . 3 . b .
• 2004 . . 3 . a.
• 2004T . . 3 . b.
• 2005 . . 3.
• 2006 . . 3.
• 2007 . . 3.
• 2008 . . 3.
• 2009 . . 3.
• 2010 . . 3.
• 2011 . . 3.
• 2012 . . 3.
• 2013 . . 3.
• 2014 . . 3.
• 2015 . . 3 . a .
• 2015T . . 3 . b .

External links

• Michigan Highways

Notes and References

1. Book: . https://books.google.com/books?id=7kXiAAAAMAAJ&pg=PA1868 . The Compiled Laws of the State of Michigan . 1 . 1915 . enacted May 13, 1913 . Chapter 91: State Reward Trunk Line Highways . 1868–1872 . Lansing, MI . Wynkoop, Hallenbeck, Crawford . Shields . Edmund C. . Black . Cyrenius P. . Broomfield . Archibald . January 24, 2012 . 44724558 .
2. yes . August 13, 2013 .
3. Web site: . Appendix C: State Trunkline Connector Routes . August 1, 2006 . January 28, 2016 . Michigan Geographic Framework . 6th . Michigan Department of Information Technology . https://web.archive.org/web/20070310231854/http://www.michigan.gov/documents/Appendix_C_Connector_19295_7.pdf . March 10, 2007 .
4. Book: Michigan Department of Information Technology . Appendix C: State Trunkline Connector Routes . May 15, 2007 . Michigan Geographic Framework . 7th . Michigan Department of Information Technology .
5. Web site: Michigan Department of Information Technology . Appendix C: State Trunkline Connector Routes . May 1, 2008 . October 15, 2008 . Michigan Geographic Framework . 8th . Michigan Department of Information Technology . https://web.archive.org/web/20081212171751/http://www.michigan.gov/documents/Appendix_C_Connector_19295_7.pdf . December 12, 2008 .