It is unlawful for any person, firm or corporation to bridge across any curb or gutter or fill any gutter with concrete, asphalt or other material for purpose of gaining access to or egress from any driveway or private property, or to obstruct or interfere with the drainage of any gutter or drain at the edge of a roadway by placing therein any concrete, asphalt, planks, stones, earth or other material or substance for such purpose except by written permit of the city engineer; provided, that building materials may be stored in or alongside of any curb and gutter or any street parking in accordance with a permit issued as provided by ordinance relating to the encumbering of streets for certain purposes; provided further, that the city may remove any existing material or any material hereafter placed across any curb or in any gutter or drain in violation of this section. (Ord. 143 § 1, 1973; Ord. 137 § 3, 1973.)