Portal:Michigan highways/Did you know/August 2012
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![M-39 crossing the River Rouge](http://upload.wikimedia.org/wikipedia/commons/thumb/a/af/River_Rouge_Dearborn.jpg/100px-River_Rouge_Dearborn.jpg)
- ... 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?