Wisconsin Statutes Municipalities (Ch. 59 to 68) § 66.1037. Beautification and protection

(1) No lands abutting on any highway, and acquired or held for highway purposes, shall be deemed discontinued for such purposes so long as they abut on any highway. All lands acquired for highway purposes after June 23, 1931, may be used for any purpose that the public authority in control of the highway determines promotes the public use and enjoyment. The authority may improve such lands by suitable planting, to prevent the erosion of the soil, or to beautify the highway. The right to protect and to plant vegetation in any highway laid out prior to June 23, 1931, may be acquired in any manner that lands may be acquired for highway purposes. Subject to sub. (2), it shall be unlawful for any person to injure any tree or shrub, or cut or trim any vegetation other than grass, or make any excavation in any highway laid out after June 23, 1931, or where the right to protect vegetation has been acquired, without the consent of the highway authority and under its direction. The authority shall remove, cut, or trim or consent to the removing, cutting, or trimming of any tree, shrub, or vegetation in order to provide safety to users of the highway.