Michigan Compiled Laws, Chapter 560. Subdivision Control Act of 1967 § 560.113

Sec. 113. (1) The proprietor shall submit 3 copies of the preliminary plat to the engineer or chairman of the county road commission if the proposed subdivision includes or abuts roads under the commission's jurisdiction.

(2) The county road commission may also require to be submitted with the preliminary plat a topographic map showing direction of drainage and proposed widths of roads under its jurisdiction or to come under its jurisdiction and private roads in unincorporated areas.

(3) The county road commission, within 30 days after receipt of the preliminary plat, shall approve it, approve it subject to conditions, or reject it.If the preliminary plat is approved, the county road commission shall note its approval on the copy to be returned to the proprietor. If the preliminary plat is approved subject to conditions or rejected, the reasons for rejection and requirements for approval shall be given in writing to the proprietor and each of the other officers and agencies to which the proprietor was required to submit the preliminary plat under sections 114 to 115 and 117 to 119.  2