M-20 is a state trunkline highway in the US state of Michigan that runs from New Era to Midland. It crosses through rural Lower Peninsula forest land between the two ends. The highway serves the college towns of Big Rapids and Mt. Pleasant, home of the main campuses of Ferris State University and Central Michigan University, both located near the trunkline.

Quick Facts Route information, Length ...

M-20
M-20 highlighted in red
Route information
Maintained by MDOT
Length	132.435 mi[1] (213.133 km)
Existed	November 11, 1926[2]–present
Major junctions
West end	US 31 near New Era
Major intersections	M-37 in White Cloud US 131 near Big Rapids M-66 in Remus US 127 in Mount Pleasant
East end	US 10 / Bus. US 10 in Midland
Location
Country	United States
State	Michigan
Counties	Oceana, Newaygo, Mecosta, Isabella, Midland, Bay
Highway system
Michigan State Trunkline Highway System Interstate US State Byways
← M-19 → M-21
← M-212 M-213 → M-214 ← B-86 B-88 → B-96

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The original July 1919 routing took M-20 farther north along a corridor now used by US Highway 10 (US 10). The M-20 designation was shifted south to the current corridor in 1926. The eastern end was truncated from Bay City to Midland in 1960, following the opening of a freeway between the two cities. The western end was rerouted from Muskegon to New Era in 1969.

M-20 starts near Lake Michigan at the US 31 freeway in New Era where it runs east through the Manistee National Forest, crossing the North Branch of the White River near Ferry and the South Branch near Hesperia on the way to White Cloud.^[3] There it turns south along M-37 and then east along a new routing following Baseline and Newcosta roads north of the Hardy Dam to meet the US 131 freeway at exit 131 near Stanwood. M-20 turns north, running concurrently along the US 131 freeway to Big Rapids and joins Business US 131 (Bus. US 131) at exit 139.^[3][4] The section along the freeway is listed on the National Highway System (NHS), a system of highways important to the nation's economy, defense and mobility.^[5] Together Bus. US 131/M-20 runs along the Perry Street commercial corridor to State Street near the main campus of Ferris State University. The business loop turns north by the campus and at Maple Street, M-20 turns eastward to cross the Muskegon River in downtown Big Rapids, north of the campus. M-20 zig-zags southeast of town bypassing the Canadian Lakes area and turns due east through rural Remus in Mecosta County and the Isabella Indian Reservation in neighboring Isabella County.^[3][4]

In Mt. Pleasant, M-20 runs near the campus of Central Michigan University crossing the Chippewa River, and the trunkline joins Bus. US 127 along the Mission Street business area to Pickard Road. The highway turns east on Pickard and passes under the US 127 freeway near the Soaring Eagle Casino. From Mt. Pleasant to Midland, M-20 is designed as a four–lane highway with a continuous center turn lane passing through rural forest land.^[3][4] M-20 picks up inclusion on the NHS from this point east.^[5]

Once M-20 reaches Midland on Jerome Street, it crosses the Tittabawassee River north of the Tridge, a three-legged bridge over the confluence of the Tittabawassee and Chippewa rivers. There it joins Business US 10 (Bus. US 10) on a pair of one-way streets: Indian Street (westbound) and Buttles Street (eastbound). The two streets pass by Dow Diamond, home to the Great Lakes Loons, the city's minor league baseball team. Bus. US 10/M-20 then passes some Dow Chemical Company buildings and curves into a freeway stub connecting with the US 10 freeway on the east side of town. This short section of business loop freeway has two interchanges before terminating at one final interchange. At this junction, both Bus. US 10 and M-20 have a common eastern terminus. Traffic headed eastbound on the business loop defaults onto eastbound US 10, and traffic destined for the business loop is fed from the westbound direction of the freeway only.^[3][4]

All exits are unnumbered.

More information County, Location ...

County	Location	mi[1]	km	Destinations	Notes
Oceana	Shelby Township	0.000	0.000	US 31 / LMCT – Muskegon, Ludington Stony Lake Road	Exit 140 on US 31; roadway continues west as Stony Lake Road
Oceana–Newaygo county line	Hesperia	18.219	29.321	M-120 south – Muskegon	M-120 runs along the county line; northern terminus of M-120
Newaygo	Wilcox Township	31.676	50.978	M-37 north – Baldwin, Traverse City	Northern end of M-37 concurrency
	White Cloud	32.948	53.025	M-37 south – Newaygo, Grand Rapids	Southern end of M-37 concurrency
Mecosta	Mecosta Township	48.364	77.834	US 131 south – Grand Rapids	Southern end of US 131 concurrency; exit 131 on US 131
	Big Rapids Township	55.814	89.824	US 131 north – Cadillac Bus. US 131 north (Perry Street) – Big Rapids	Northern end of US 131 concurrency; western end of Bus. US 131 concurrency; exit 138 on US 131
	Big Rapids	58.419	94.016	Bus. US 131 north (Michigan Avenue)	Eastern end of Bus. US 131 concurrency
	Remus	81.814	131.667	M-66 – Lake City, Ionia
Isabella	Mt. Pleasant	100.767	162.169	Bus. US 127 south (Mission Street)	Southern end of Bus. US 127 concurrency
		101.776	163.793	Bus. US 127 north (Mission Street)	Northern end of Bus. US 127 concurrency
	Union Township	103.244	166.155	US 127 – Clare, Lansing	Exit 143 on US 127
Midland	Homer–Lee township line	121.781	195.988	M-30 (Meridian Road) – West Branch
	Midland	128.088	206.138	Bus. US 10 west	Western terminus of Bus. US 10 concurency
		129.830	208.941	Western end of freeway
		130.101	209.377	Saginaw Road	Interchange; eastbound exit and westbound entrance via roundabout with Patrick Road
		131.272	211.262	Waldo Road	Interchange; westbound exit and eastbound entrance
Bay		132.435	213.133	Bus. US 10 west US 10 east – Bay City	Eastern terminus of Bus. US 10 and M-20; eastbound exit and westbound entrance
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access

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