Mich. Comp. Laws § 252.152
After review of proposed interstate highway routes, and following preliminary negotiations, when it shall be deemed necessary by the department to resolve disputes concerning the routes through 1 or more municipalities, to resort to final arbitration measures provided by this act, the commission shall send by registered mail to the clerk of each affected municipality notice of the interstate highway route location proposed by the department in the disputed matter and a notice that arbitration proceedings are initiated. Within 30 days thereafter, if the governing body of each affected municipality does not consent by resolution either to the approval of the location or to voluntary binding arbitration as provided in this section, the commission shall request in writing that a highway location arbitration board be authorized to make a final determination of the route. The governing body of any affected municipality which does not consent to the route location by resolution may agree with 1 or more other affected municipalities to voluntary binding arbitration on the issue of route location according to terms approved by the commission; in which case such municipalities shall no longer be considered affected municipalities within the terms of this act. The governor, on the date of the request, shall send notice of the request by registered mail to the clerk of each affected municipality as determined by the commission. The commission's request shall name all the affected municipalities.
MCL 252.152