&sq=crain_ford&lang=en&file=File:M-50.svg) M-50 | ||||
|---|---|---|---|---|
 M-50 highlighted in red | ||||
| Route information | ||||
| Maintained by MDOT | ||||
| Length | 138.072 mi[1] (222.205 km) | |||
| Existed | c. July 1, 1919[2]–present | |||
| Major junctions | ||||
| West end |  I-96 near Alto | |||
| East end |  US 24 in Monroe | |||
| Location | ||||
| Country | United States | |||
| State | Michigan | |||
| Counties | Kent, Ionia, Barry, Eaton, Jackson, Lenawee, Monroe | |||
| Highway system | ||||
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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 (US 24, Telegraph Road). 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.
Dating back to the early days of the state highway system, M-50 was first signed in the southeastern corner of the state in 1919. During the 1920s, the highway was extended to the Grand Rapids area and beyond to Lake Michigan, making it a trans-peninsular route connecting that Great Lake with Lake Erie. A rerouting of highways including M-50 through Grand Rapids in the 1950s created Business M-50 (Bus. M-50), a business loop through that city that lasted for eight years. Additional changes made during the 1960s rerouted M-50 to replace its business loop until the highway was shortened to its present western terminus south of Lowell. A pair of truncations in Monroe in 1996 and 2006 are responsible for the present-day eastern terminus.