The northern terminus of M-5 (Michigan highway) is in Commerce.

In 1979 Highway M-26 (Michigan highway) was rerouted through the community, bisecting it.

At this time, M-206 (Michigan highway) was designated from M-26 to the Eagle Harbor light house.

M-21A (Michigan highway) in Flint was turned over to local control in 1948 .

M-52 (Michigan highway) runs through town and motorists passing through will notice the striking, Romanesque township hall in the center of the village square.

M-4 (1939 Michigan highway) was the original designation of M-134 in Mackinac and Chippewa counties.

The men's prison was located on the south side of M-61 (Michigan highway).

For the proposed state route that is also related to US-31, see M-231 (Michigan highway).

M-49 is the only Michigan highway in which the road crossing into another state has the same state highway number.

For the street in Detroit, Michigan, see M-97 (Michigan highway).