Portal:Michigan highways/Did you know/July 2012

Marquette–Negaunee Road in 1917 with the first highway centerline in the country

... that the first highway centerline (pictured) was painted on the Marquette–Negaunee Road by K.I. Sawyer in 1917?
... that M-102 has been featured in music and movies?
... that US 45 runs from Mobile, Alabama, to Ontonagon in the Upper Peninsula?
... that until it was truncated, M-32 used to cross the Lower Peninsula from Lake Michigan to Lake Huron?
... that M-27 used to be a part of US 27?