M-13 (Michigan highway)

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M-13 marker

M-13 highlighted in red
Route information
Maintained by MDOT
Length: 73.339 mi[2] (118.028 km)
Existed: c. 1932[1] – present
Lake Huron Circle Tour
Major junctions
South end: I‑69 near Lennon

M‑57 near Chesaning
I‑75 near Saginaw

BS I‑75 / M‑25 in Bay City
North end: US 23 near Standish
Counties: Shiawassee, Genesee, Saginaw. Bay, Arenac
Highway system
M‑12 M‑14

M-13 is a 73.339-mile (118.028 km) north–south state trunkline highway that runs through the Saginaw Bay region of the US state of Michigan. It runs from Interstate 69 (I-69) south of Lennon to US Highway 23 (US 23) near Standish. The southern section of the trunkline runs along a pair of county lines in a rural area dominated by farm fields. The highway directly connects the downtown areas of both Saginaw and Bay City. North of the latter city, the Lake Huron Circle Tour follows M-13 along the Saginaw Bay.

The original 1919 version of M-13 ran along the west side of the state, roughly replaced by what is now US 131 in 1926. The current highway was first designated by 1932 with the M-13 moniker. After a series of extensions in the 1930s, the highway ran from Lennon to Saginaw. Another set of expansions in the 1960s added roadways that previously carried US 23 all the way north to the Standish area. A related section of highway is numbered Connector M-13, a connector route that was once part of US 23 in the Kawkawlin area.

Route description[edit]

M-13 starts at its junction with I-69 near the village of Lennon along the GeneseeShiawassee county line. The highway follows County Line Road north into the village where it follows Sheridan Avenue through town,[3][4] including a crossing of the Huron and Eastern Railway[5] North of Lennon, the trunkline intersects M-21 and continues along the county line through fields. Northeast of New Lothrop, M-13 moves from the Genesee–Shiawassee county line to the Genesee–Saginaw county line. Near Montrose, the highway intersects M-57 before passing into woodlands while crossing fully into Saginaw County.[3][4]

M-13 angles to the northwest briefly before returning to a due north course along E Road. The highway crosses the Flint River in another area of farm fields. As the road approaches Saginaw, it crosses the Cass River and runs to the east of it as it merges with the Shiawassee River and the Tittabawassee River to form the Saginaw River. M-13 follows Washington Avenue in the city of Saginaw inland from, but parallel to, the Saginaw River through downtown. The trunkline intersects M-46, which follows Rust Avenue, and passes Hoyt Park. Washington Avenue runs by the campus of St. Mary's of Michigan Medical Center. As the highway passes out of downtown,[3][4] it crosses or runs alongside lines of the Saginaw Bay Southern and Lake State railways.[5]

The Lafayette Avenue Bridge carries M-13/M-84 across the Saginaw River in Bay City

Running immediately next to the river, M-13 meets I-75/US 23 at that freeway's exit 153 just southeast of the Zilwaukee Bridge. The highway runs along Bay City Road as it continues to follow the Saginaw River through the Crow Island State Game Area. On the south side of Bay City, the name changes to River Road. M-13 passes the James Clements Municipal Airport and transitions to follow Broadway Street into downtown. At Lafayette Street, M-13 turns west and merges with M-84. The two highways run concurrently across the Saginaw River on the Lafayette Avenue Bridge. The structure's two spans connect the riverbanks with the Middle Ground Island in the center. West of the bridge, M-13/M-84 follows Salzburg Avenue to the intersection with Euclid Avenue. At that location, M-13 turns north along Euclid Avenue, which runs along the western city line. M-13 meets the 2 one-way streets that carry M-25 and the I-75 business spur at the intersections with Thomas and Jenny streets. From this intersection on, M-13 forms a part of the Lake Huron Circle Tour. Farther north, the highway turns northwesterly on Huron Road; Euclid Avenue continues north as M-247.[3][4]

As the trunkline heads away from Bay City, it runs parallel to the Lake State Railway again. M-13 intersects the northern end of its connector route before Huron Road crosses the Kawkawlin River. The highway runs through the community of the same name on the north side of the river. M-13 and Huron Road continue north across mixed agricultural and forest land as they pass through the communities of Linwood and Pinconning. South of Standish in Arenac County, M-13 meets the northern end of the US 23 freeway and terminates.[3][4]

M-13 is maintained by the Michigan Department of Transportation (MDOT) like other state highways in Michigan. As a part of these maintenance responsibilities, the department tracks the volume of traffic that uses the roadways under its jurisdiction. These volumes are expressed using a metric called annual average daily traffic, which is a statistical calculation of the average daily number of vehicles on a segment of roadway. MDOT's surveys in 2009 showed that the highest traffic levels along M-13 were the 28,242 vehicles daily north of the M-25 junction in Bay City; the lowest counts were the 3381 vehicles per day south of the I-75/US 23 interchange near Saginaw.[6] The only sections of M-13 that have been listed on the National Highway System (NHS) are along the M-84 concurrency and Euclid Avenue south of Wilder Road in the Bay City area.[7] The NHS is a network of roads important to the country's economy, defense, and mobility.[8]


Previous designation[edit]

When the state highway system was first signed in 1919, M-13 followed the general path of the modern US 131. The highway specifically ran along what is now M-103, US 12, the pre-freeway US 131, M-113, M-186, US 131, US 31 and M-119 between the Indiana state line south of Mottville to Harbor Springs.[9] When the United States Numbered Highway System was created on November 11, 1926,[10] US 131 replaced M-13 from the state line north to Fife Lake; from Fife Lake north to Harbor Springs, the highway was redesignated M-131.[11]

Current highway[edit]

The Michigan State Highway Department (MSHD) used the M-13 designation for a highway at the end of 1932 that that connected M-78 and M-21 through Lennon.[1] By the middle of 1936, the highway had been extended northward to end at a junction with M-46 in Saginaw.[12] The entire trunkline was paved in the middle of 1939.[13][14] Later the next year, the section in Saginaw was extended a bit farther along Washington Avenue to end at a junction with US 10 and US 23.[15][16] A section of the then-M-78 freeway (now I-69) opened between 1958 and 1960; when this freeway opened, M-13 was truncated northwards slightly in the Lennon area to end at the new highway.[17][18] The first section of the US 23 freeway around Bay City opened in late 1960 or early 1961. When it opened, MSHD extended M-13 along the former route of US 23 from the northside of Saginaw into Bay City to the end of the freeway at Kawkawlin.[18][19] The I-75/US 23 freeway north of the Kawkawlin area to Standish opened in 1967, and M-13 is shown on maps following US 23's former route through Linwood and Pinconning after the change.[20][21] The routing of M-13 has stayed the same since.[3]

Major intersections[edit]

County Location Mile[2] km Destinations Notes
ShiawaseeGenesee county line VeniceClayton township line 0.000 0.000 I‑69 – Lansing, Flint Exit 123 on I-69
2.398 3.859 M‑21 (Corunna Road) – Grand Rapids, Flint
SaginawGenesee county line Maple GroveMontrose township line 14.627 23.540 M‑57 – Greenville, Clio
Saginaw Saginaw 31.196 50.205 M‑46 – Cedar Springs, Sandusky
M‑81 east – Caro
Buena Vista Township 37.015–
I‑75 / US 23 – Flint, Mackinac Bridge, Alpena Exit 153 on I-75
Bay Bay City 44.517 71.643 M‑84 north Eastern end of M-84 concurrency
Bay CityMonitor Township line 45.635 73.442 M‑84 south Western end of M-84 concurrency
Bay CityBangor Township line 46.817–
BS I‑75 / M‑25 / LHCT south (Thomas Street, Jenny Street) South end of LHCT concurrency
Bangor Township 49.918–
M‑247 north – Bay City State Park Southern terminus of M-247
Monitor Township 51.932 83.576
Northern terminus of the M-13 Connector to I-75
Arenac Standish Township 73.339 118.028 US 23 / LHCT north – Bay City, Alpena North end of LMCT concurrency
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Connector route[edit]

Main article: M-13 Connector

Location: Kawkawlin
Length: 2.414 mi[2] (3.885 km)
Existed: 1967[20][21]–present

M-13 Connector (CONN M-13) is a connector route running 2.414 miles (3.885 km) connecting I-75/US 23 to M-13 near the community of Kawkawlin, just north of Bay City. The short freeway was originally the northern end of the US 23 freeway in the area when it opened.[18][19] The current designation was applied in 1967.[20][21]

See also[edit]


  1. ^ a b Michigan State Highway Department (October 1, 1932). Official Michigan Highway Map (Map). Cartography by Rand McNally.
  2. ^ a b c Michigan Department of Transportation (2009). MDOT Physical Reference Finder Application (Map). Cartography by Michigan Center for Geographic Information. http://www.mcgi.state.mi.us/prfinder/. Retrieved April 8, 2011.
  3. ^ a b c d e f Michigan Department of Transportation (2010). Official Department of Transportation Map (Map). 1 in:15 mi/1 cm:9 km. Section I12–K12.
  4. ^ a b c d e Google Inc. "Overview Map of M-13". Google Maps (Map). Cartography by Google, Inc. http://maps.google.com/maps?f=d&source=s_d&saddr=M-13+S%2FW+County+Line+Rd%2FS+Sheridan+Rd&daddr=43.45199,-83.91234+to:43.5171301,-83.9375196+to:43.587121,-83.9156125+to:43.884778,-83.9660591+to:M-13+S%2FS+Huron+Rd&hl=en&geocode=FVqWjwId7lj_-g%3BFVYGlwIdbJn_-ilb7k7POOgjiDGkWak55kskRA%3BFcoEmAIdETf_-ikZpswngt0jiDGTYWItn557Ig%3BFTEWmQIdpIz_-imbM73ci-AjiDGd_Fai7oChGg%3BFeqgnQIdlcf--ilZ6nXJT2ohiDH2-lHWiBHhCA%3BFRyTngId9sT--g&mra=ls&via=1,2,3,4&sll=43.010924,-83.921814&sspn=0.234727,0.232773&ie=UTF8&t=h&z=9. Retrieved April 8, 2011.
  5. ^ a b Michigan Department of Transportation (April 2009) (PDF). Michigan's Railroad System (Map). http://www.michigan.gov/documents/MDOT_Official_Rail_130897_7.pdf. Retrieved September 14, 2010.
  6. ^ Bureau of Transportation Planning (2008). "Traffic Monitoring Information System". Michigan Department of Transportation. Retrieved April 8, 2011. 
  7. ^ Michigan Department of Transportation (2005) (PDF). National Highway System: Bay City Urbanized Area (Map). http://www.michigan.gov/documents/MDOT_NHS_Bay_City_150607_7.pdf. Retrieved January 1, 2011.
  8. ^ "The National Highway System". Federal Highway Administration. August 26, 2010. Retrieved January 1, 2011. 
  9. ^ Michigan State Highway Department (July 1, 1919). State of Michigan: Lower Peninsula (Map). Cartography by MSHD.
  10. ^ Bureau of Public Roads (November 11, 1926). United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials (Map). 1:7,000,000. Cartography by U.S. Geological Survey. OCLC 32889555. http://texashistory.unt.edu/ark:/67531/metapth298433/m1/1/zoom/. Retrieved November 7, 2013.
  11. ^ Michigan State Highway Department (December 1, 1926). Official Highway Service Map (Map). Cartography by MSHD.
  12. ^ Michigan State Highway Department (June 1, 1936). 1936 Official Michigan Highway Map (Map). Cartography by Rand McNally. Section J12–K12.
  13. ^ Michigan State Highway Department (April 15, 1939). 1939 Official Michigan Highway Map (Map). Cartography by Rand McNally (Summer ed.). Section J12–K12.
  14. ^ Michigan State Highway Department (December 1, 1939). 1939 Official Michigan Highway Map (Map). Cartography by Rand McNally (Winter ed.). Section J12–K12.
  15. ^ Michigan State Highway Department (July 15, 1940). 1940 Official Michigan Highway Map (Map). Cartography by Rand McNally (Summer ed.). Saginaw inset.
  16. ^ Michigan State Highway Department (December 1, 1940). 1940 Official Michigan Highway Map (Map). Cartography by Rand McNally (Winter ed.). Saginaw inset.
  17. ^ Michigan State Highway Department (1958). Official Highway Map (Map). Section K12. (Includes all changes through July 1, 1958)
  18. ^ a b c Michigan State Highway Department (1960). Official Highway Map (Map). Section J12, K12. (Includes all changes through July 1, 1960)
  19. ^ a b Michigan State Highway Department (1961). Official Highway Map (Map). Section J12. (Includes all changes through July 1, 1961)
  20. ^ a b c Michigan Department of State Highways (1967). Official Highway Map (Map). Section I12–J12.
  21. ^ a b c Michigan Department of State Highways (1968). Official Highway Map (Map). Section I12–J12.

External links[edit]

Route map: Google / Bing