(1) The governing body of a county is authorized and empowered to create special improvement districts under Title 7, chapter 12, part 21, and this part, within the unincorporated portion of the county. The governing body of a city or town is authorized and empowered to create special improvement districts under Title 7, chapter 12, parts 41 and 42, and this part, within its territorial limits. The special improvement districts must provide for the conversion of existing overhead electrical and communication facilities to underground locations and the construction, reconstruction, or relocation of any other electric or communication facilities that may be incidental to the conversion.
(2) A special improvement district must include an area having a frontage of not less than 1,000 feet upon a public street, road, highway, or utilities easement along which overhead electric or communication facilities are located.