Mich. Comp. Laws § 252.55

Sec. 5. Any such agency shall have authority to provide for the elimination of intersections of limited access highways with existing state and county roads, city and village streets and private driveways, by grade separation, access or service road, or by closing off such roads, streets and driveways at the boundary line of such limited access highway, but only with the consent of the county, city or village; and after the establishment of any limited access highway, no road which is not part of said limited access highway system shall run into or intersect the same at grade.