Any obstruction maintained in violation of this chapter shall be deemed a nuisance, and upon failure to abate the same within twenty (20) days after the posting upon the premises of notice to abate the nuisance signed by the city traffic engineer, such representative of the city traffic engineer as he or she may so authorize may enter upon the premises and remove or eliminate the obstruction. In such event, the cost to the city of the abatement of the nuisance shall be a lien upon the premises; provided, that a claim therefor be filed within the time and in the manner as prescribed in Section 1187 of the Civil Procedure Code of the state. The cost of such abatement shall, in addition, be a personal obligation against the owner of the premises upon which the nuisance was maintained, recoverable by the city in an action before any court of competent jurisdiction. (Prior code § 38.02.025)