(1) All sidewalks, including curbs and gutters within the unincorporated areas of a county and within nonparticipating municipalities situated within the county, are designated county sidewalks. All sidewalks within participating municipalities are designated municipal sidewalks.
(2) Counties and participating municipalities may construct and maintain curbs, gutters, sidewalks, or pedestrian and bicyclist safety devices adjacent to the traveled portion of state highways upon easements that may be granted by the department. The department shall cooperate with counties and participating municipalities to accomplish pedestrian and bicyclist safety construction and maintenance.
(3) A county or municipality may construct and maintain pedestrian and bicyclist safety devices on state highways in compliance with rules made by the department.