Michigan Compiled Laws, Chapter 462. Railroads § 462.265

(a) For crossings within the right-of-way of a public street, highway, road, or alley, notification shall first be given to the railroad company and railroad authority of the place and the manner in which the corporation or person desires to string any wire 30 calendar days prior to performance of the work unless the parties otherwise agree.

(b) For crossings at any other location not within the right-of-way of a public street, highway, road, or alley, notification shall first be given to the railroad company and railroad authority in writing of the place and the manner in which the corporation or person desires to string the wire and written or telegraphic permission shall be received from the railroad company and railroad authority prior to performance of the work. The railroad company shall respond positively or negatively to the request within 90 calendar days after the receipt of the request.