Wis. Stat. § 195.32
Whenever a complaint is filed with the office to the effect that any drawbridge is not equipped with gates or other safety devices, the office may notify the proper party or parties in interest of the complaint, and may proceed to investigate the complaint and to hold a hearing on the matter in the manner provided for hearings in ss. 195.04 to 195.043. If after the investigation the office determines that public safety requires the erection and maintenance of gates or other safety devices at the points mentioned in the complaint, it may order the county, city, village, town, corporation or person whose duty it is to maintain such bridge to erect and maintain at such points such gates or other safety devices as the office prescribes. The office may conduct the investigations, hold the hearings and make the orders provided for in this section upon its own motion in the same manner and with the same effect as though a complaint were filed.
Wis. Stat. § 195.32