La. Stat. tit. 33 § 3689.9
In the event the local or special assessments originally levied are insufficient for any cause whatsoever to pay the principal and interest or the principal or interest in any one year on the said paving certificates outstanding at their respective maturity dates, then in that event the parish issuing such paving certificates under the provisions of R.S. 33:3689.1-33:3689.17, through its police jury, is hereby empowered, authorized and obligated by ordinance to levy and collect, at such time or times as may be necessary, an additional local or special assessment on each lot or parcel of real estate abutting the street, road, sidewalk or alley so improved sufficient in amount to pay in full the said principal and interest or the principal or interest of such paving certificates at their respective maturity dates. The amounts assessed in such ordinance or ordinances shall be due and collectible immediately on its passage and if not paid within thirty days from the date of its adoption and publication, the police jury shall proceed against the property for the collection of the amount of the additional local or special assessment so levied plus interest thereon and ten (10%) per cent additional for attorney's fees. A certified copy of each ordinance providing for the levy and collection of such additional local or special assessment shall be filed with the clerk of court of the parish within ten days from the date of its adoption, who shall forthwith record the same in the mortgage records of the parish and when so filed and recorded shall operate as a lien and privilege against all the real estate therein assessed and shall prime all other claims except taxes.
La. R.S. § 33:3689.9