Wis. Stat. § 191.17
Upon receiving the specification required by s. 191.16, the office shall examine the same and shall hear the applicant in support thereof, shall suggest and require modifications of the specification if the public safety so demands, eliminating so far as may be practicable, consistent with reasonable cost, all grade crossings of public highways, shall inspect the route of the proposed railroad if deemed desirable, and shall otherwise investigate and determine that the proposed construction will be adequate for securing public safety in the operation of the railroad, and thereupon the office shall enter an order approving the specification and authorizing the construction of the railroad in accordance therewith and with the provisions of ch. 195.
Wis. Stat. § 191.17