Editing U.S. Route 12 (section)

===Michigan===
{{Main|U.S. Route 12 in Michigan}}
US&nbsp;12 is now the only U.S. Highway still serving Downtown Detroit, whose [[street grid]] was laid by [[Augustus B. Woodward]], to have a five-way intersection of the roads that would become US&nbsp;12, [[U.S. Route 10|US&nbsp;10]], [[U.S. Route 16|US&nbsp;16]], [[U.S. Route 112|US&nbsp;112]] and [[U.S. Route 25|US&nbsp;25]]. [[U.S. Route 24|US&nbsp;24]] still travels through Detroit from Puritan to 8&nbsp;Mile Road ([[M-102 (Michigan highway)|M-102]]) on the far west side.

As from the earliest days of its existence, US&nbsp;12 enters Michigan from Indiana, southwest of [[New Buffalo, Michigan|New Buffalo]], and continues to the old junction of US&nbsp;12 and US&nbsp;112 in New Buffalo. It is now assigned between New Buffalo and Detroit (except through Ypsilanti), along what was US&nbsp;112 until 1962.

On May 4, 2004, the [[Michigan Department of Transportation]] (MDOT) designated {{convert|209|mi|km}} of US&nbsp;12 from New Buffalo to Detroit as a [[Michigan Heritage Route]]. The east–west corridor traverses the counties of [[Berrien County, Michigan|Berrien]], [[Cass County, Michigan|Cass]], [[St. Joseph County, Michigan|St. Joseph]], [[Branch County, Michigan|Branch]], [[Hillsdale County, Michigan|Hillsdale]], [[Lenawee County, Michigan|Lenawee]], [[Washtenaw County, Michigan|Washtenaw]], and [[Wayne County, Michigan|Wayne]].