The city traffic engineer may, by written permit, authorize a load or loads in excess of those allowed for in the Vehicle Code, if, in his or her judgment, the streets upon which the vehicle is to be operated can safely withstand the additional weight, or if the applicant will guarantee to the city that all costs of repair to the streets or to the public property of the city damaged by the movement of such load or loads will be paid in full. The permit shall be granted upon such conditions and upon depositing such bond as the city traffic engineer in his or her discretion may require. (Ord. 432 § 2(part), 1982).