M-52 (Michigan highway)

M-52
M-52 highlighted in red
Route information
Maintained by MDOT
Length	127.300 mi[1] (204.869 km)
Existed	c. July 1, 1919[2]–present
Major junctions
South end	SR 109 at Ohio state line
Major intersections	US 223 in Adrian M-50 near Tecumseh US 12 near Clinton I-94 in Chelsea I-96 in Webberville I-69 in Perry
North end	M-46 near Saginaw
Location
Country	United States
State	Michigan
Counties	Lenawee, Washtenaw, Jackson, Ingham, Shiawassee, Saginaw
Highway system
Michigan State Trunkline Highway System Interstate US State Byways
← M-51 → M-53
← M-91 M-92 → M-93

M-52 is a north–south state trunkline highway in the US state of Michigan. The southern terminus is on the Ohio border, where it continues as State Route 109 (SR 109). The highway passes through communities like Adrian, where it intersects US Highway 223 (US 223), Chelsea and Webberville along its 127.3-mile-long (204.9 km) course. It crosses some major rivers, including the River Raisin and the Shiawassee. The section of the highway between M-50 and Manchester was built as a limited-access highway. M-52's northern terminus is at M-46, nine miles (14 km) west of Saginaw.

Adrian previously converted their downtown streets to one-way traffic between 1950 and 1973. The traffic pattern created an unusual arrangement in the routings of the two state highways downtown. Southbound M-52 followed Winter Street, which also carried both eastbound and westbound directions of the US 223 business loop. These streets carried both highways around the downtown business district in this arrangement until November 2009.

M-52 is an original state trunkline highway, dating to the 1919 formation of the system. Other segments of the modern routing were designated M-92 and M-47 at the time. Extensions to M-52 supplanted M-92 completely and M-47 partially along their routings. These extensions completed the modern M-52 routing in the late 1960s.