M-103 (Michigan highway)

M-103
M-103
	M-103 highlighted in red
Route information
	Maintained by MDOT
Length	3.055 mi (4.917 km)
Existed	by 1960–present
Major junctions
South end	SR 15 near Bristol, IN
North end	US 12 at Mottville
Location
Country	United States
State	Michigan
Counties	St. Joseph
Highway system
	Michigan State Trunkline Highway System; Interstate; US; State; Byways;

M-103 is a state trunkline highway entirely within St. Joseph County in the southwestern region of the U.S. state of Michigan. The trunkline runs between U.S. Highway 12 (US 12) in Mottville and the Indiana state line along undivided highway near the St. Joseph River. With the connection to State Road 15 (SR 15), it provides access to the Indiana Toll Road. The current highway is the second to carry the number; the first version of M-103 has been incorporated into the routing of US 131.