A. No person shall injure or obstruct any street or alley within the city by digging a ditch through, over or across the same except where a person shall construct a substantial culvert over such ditch and keep the culvert in good repair or where a permit is granted by the city engineer.
B. No tractor or vehicle having rough surfaced metal tracks or rough surfaced metal wheels shall be operated on oiled or paved city streets without prior approval of the city engineering department. (1956 Code § 7-046)