M-43 is a state trunkline highway in the southwestern and central parts of the US state of Michigan. The highway runs from South Haven to Webberville along an indirect path through both rural areas and larger cities. The trunkline follows five overall segments: a southeasterly track from South Haven to Oshtemo Township, a northerly path to Plainwell, a southeasterly route to Richland, a northeasterly course to the Hastings area and an easterly route through the Lansing area.
M-40 is a north–south state trunkline highway in the Lower Peninsula of the US state of Michigan. The highway runs from US Highway 12 (US 12) near the Indiana state line in Porter Township north through Paw Paw and Allegan to end in the outskirts of Holland. The current northern end is near Interstate 196 (I-196) at an intersection with US 31/Business Loop I-196 (BL 196). In between, M-40 runs through mixed agricultural and forest lands and along lakes and rivers through Southwest Michigan.
M-79 is an east–west state trunkline highway in the central portion of Lower Peninsula of the U.S. state of Michigan. The western terminus is about three miles (4.8 km) southeast of Hastings at the junction with M-37 and the eastern terminus is in downtown Charlotte at the junction with M-50 and Business Loop Interstate 69 (BL I-69). It passes through Quimby and Nashville, where there is a junction with M-66. The entire highway is undivided surface road. It has no direct access with Interstate 69 (I-69), although a sign for the highway is located on southbound I-69 at exit 61.
M-50 is a state trunkline highway in the US state of Michigan. Although designated as an east–west highway, it is nearly a diagonal northwest–southeast route. The western terminus is at exit 52 along Interstate 96 (I-96) near Alto a few miles east of the metro Grand Rapids area, and its eastern terminus is in downtown Monroe at US Highway 24. In between the trunkline runs through seven counties of the southern part of the Lower Peninsula mostly through rural farm fields and small communities. The highway also runs through downtown Jackson to connect between two freeway sections of US 127. In the Irish Hills area of the state southeast of Jackson, M-50 runs next to Michigan International Speedway.
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.
M-76 is a former state trunkline highway designation in the Lower Peninsula of the US state of Michigan. The highway's designation was decommissioned when the last section of it was converted to freeway as a part of the present-day Interstate 75 (I-75). At that time, M-76 extended from US Highway 23 (US 23) near Standish northwesterly to I-75 south of Grayling. Two sections of the route followed freeways with a two-lane highway in between to connect them. The former routing of M-76 through West Branch before that city was bypassed was initially redesignated Business M-76. The highway itself ran through mixed fields and forests bypassing several other towns in the region.
M-75 is a 11.768-mile-long (18.939 km) segment of state trunkline highway located in Charlevoix County in the U.S. state of Michigan. This highway serves as a loop off US Highway 131 (US 131), providing access to Boyne City. The highway happens to be geographically close to Interstate 75 (I-75), but they are not related.
M-33 is a north–south state trunkline highway in the US state of Michigan that runs from Interstate 75 (I-75) at Alger in Arenac County north to M-27 near Cheboygan. In between, the trunkline runs through rural sections of the northeastern Lower Peninsula including state and national forest areas. M-33 connects to a handful of parks and crosses several of the rivers in that section of the state. It runs concurrently with three other state highways, sharing pavement to connect through several small communities of Northern Michigan.
M-57 is an east–west state trunkline highway in the US state of Michigan. The 105.377-mile (169.588 km) highway connects US Highway 131 (US 131) near Rockford on the west end to M-15 near Otisville in the Lower Peninsula. 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.
M-55 is a state trunkline highway in the northern part of the US state of Michigan. M-55 is one of only three state highways that extend across the Lower Peninsula from Lake Huron to Lake Michigan; the others are M-46 and M-72. The highway crosses through rural forest and farmlands to connect Manistee with Tawas City. M-55 crosses two of the major rivers in the state. Two sections of the highway follow along freeways near Cadillac and West Branch. Running for 150.944 miles (242.921 km) through the state, M-55 is maintained by the Michigan Department of Transportation (MDOT).
M-61 is a state trunkline highway in the US state of Michigan that runs between Marion and Standish. The highway runs along the boundary area between Northern Michigan and Central Michigan in the Lower Peninsula. M-61 runs through rural forestland connecting several smaller communities together as it connects M-115, US Highway 127 (US 127), Interstate 75 (I-75) and US 23. Less than 10,000 vehicles a day use various segments of the roadway on average.
M-36 is a state trunkline highway in the Lower Peninsula of the US state of Michigan that runs in a west–east direction from Mason to Whitmore Lake. The trunkline connects US Highway 127 (US 127) south of Lansing and US 23 north of Ann Arbor. The highway connects several smaller communities in the rural areas along its route. M-36 also runs concurrently with two other roadways, sharing pavement with M-52 and County Road D-19. According to traffic surveys in 2010, between 650 and 15,300 vehicles used the highway on average each day.
M-64 is a north–south state trunkline highway in the Upper Peninsula of the US state of Michigan. It runs for approximately 63+3⁄4 miles (102.6 km) through the western part of the state in land that is part of the Ottawa National Forest. The highway connects with County Trunk Highway B (CTH-B) at the state line near Presque Isle, Wisconsin. As it passes through dense forests, M-64 runs along lakes Gogebic and Superior. The northern end is at a junction with US Highway 45 (US 45) in Ontonagon.
M-65 is a 103.176-mile-long (166.046 km) state trunkline highway in the US state of Michigan. The highway runs between termini on US Highway 23 (US 23) near Omer and Rogers City in the northeastern Lower Peninsula of the state. M-65 runs inland through several small communities in the region, passing through forests and fields along its course. M-65 crosses several watercourses, including the Au Sable River where it runs along the River Road National Scenic Byway. The region also includes the Huron National Forest and the Mackinaw State Forest areas.
M-90 is a state trunkline highway in The Thumb region of the US state of Michigan. It runs from near North Branch eastward to Lexington situated on Lake Huron. The highway is a lightly traveled roadway that runs through rural farmlands. The trunkline runs mostly east–west with two short north–south segments where it turns to run concurrently with other state highways. Along the routing, there are two river crossings and one railroad crossing.
M-98 is the designation of a former 16.2-mile (26.1 km) state trunkline highway in the Upper Peninsula of the US state of Michigan. It ran between M-77 at Germfask and M-28 near McMillan. The highway connected both small towns situated around Manistique Lake when it was designated with the rest of the original state highways in 1919. The section north of Helmer on the east side of the lake ran concurrently with M-135 after the latter's creation in the late 1920s. M-98 was extended at the end of the 1940s before the whole trunkline was removed from the highway system in the 1960s. Since the 1970s, part of M-98 has been designated as one of the two County Road H-44s in the state.
M-106 is a state trunkline highway in the Lower Peninsula of the US state of Michigan in and near the city of Jackson. M-106 travels in a southwest-to-northeast direction from Jackson to Gregory at a junction with M-36 just a few miles northwest of Hell. The highway was first designated in 1928 running north out of downtown Jackson. It connected U.S. Highway 12 (US 12) to the state prison and Bunkerhill Road. A pair of changes in the early 1930s resulted in the extension eastward to Gregory. From the 1960s until the early years of the 21st century, a section of M-106 in downtown Jackson was routed along one-way streets.
M-130 was the designation of a former state trunkline highway in the southeastern corner of the US state of Michigan. It ran from a junction with US Highway 23/M-50 (US 23/M-50) northward across the River Raisin and then turned southeasterly along North Custer Road on the north side of the river to Monroe. The highway designation was commissioned in 1929 and used until 1955. M-130 had a spur route that was created in 1938 and lasted until the main highway was removed from the state highway system. Both highways are now under local control.
M-132 was the designation of a former state trunkline highway in the Lower Peninsula of the US state of Michigan near Ann Arbor. The highway, commissioned in 1929, connected Ann Arbor and Dexter to the northwest along present-day Dexter–Ann Arbor Road. The roadway was turned back to local control around 1960.
H-33 is a county-designated highway in the Upper Peninsula of the US state of Michigan between Gould City and McMillan that was previously M-135, a former state trunkline highway. The roadway follows Manistique Lakes Road from Gould City at a junction with US Highway 2 (US 2) near Lake Michigan north to M-28 near McMillan. The northern section of the highway is also called County Road 135 (CR 135) in Luce County.
M-76 near Sterling 
M-55 near Prescott 
