S.D. Codified Laws § 49-34-2

Every railroad, electric light, or power line, constructed and operated upon any public street or highway pursuant to § 49-34-1, shall be constructed upon the most approved plan and be subject to such reasonable rules and regulations as the proper authorities may from time to time prescribe and shall be so laid and operated as not to obstruct public travel therein; rails shall be laid flush with the surface of the street or highway and shall not be permitted to project above the same; that portion of the street or roadway between tracks and for one foot from the outer edge thereof shall be kept in repair and condition by such corporation at its own expense.