Portal:Michigan highways/Did you know/August 2012

... that M-39 (River Rouge crossing pictured) is better known as the Southfield Freeway?
... that M-75 was previously numbered M-57 until the digits were reversed?
... that both M-30 and M-129, on the Lower and Upper peninsulas respectively, follow the Michigan Meridian, an important landmark for how Michigan was surveyed?
... that there is an unsigned section of M-221?
... that M-95 has been named for Leif Ericson, the Norse explorer?