1. Said assessments for benefits shall be a lien from the date of the taking effect of the initiatory ordinance and shall continue until the assessment against such lot, tract or parcel of land has been fully paid or a sale made thereunder. No assessment shall be defeated or affected by any irregularity affecting only other assessments. In case of failure of the proceedings as to any part of the land to be condemned supplementary proceedings may be had as to such part. Damages allowed and benefits assessed shall bear interest from the date of final judgment until paid at the rate of six percent per annum, but in case of any deficiency in the interest collected upon benefit assessments, the city shall pay the deficit. In case of failure to collect any assessments in full or in part by failure of the property to sell for a sufficient price to fully pay same and costs of sale, or otherwise, the city shall pay the amount of such deficit or loss. The city may pay all or any part of the assessments and have execution therefor in its own right.

2. Special executions may be issued against any property assessed for benefits at the instance of the city or of any party entitled to damages under the judgment, and such special execution shall be entitled as the case is docketed without naming any owner of the property, and proceedings thereon and sale thereunder shall be governed by the ordinary rules applicable to special executions against real estate. Payments shall be made to the clerk of the court in which the judgment is rendered, and if made at different times the clerk may disburse the same by prorating the amount or amounts so received by him among the various lots, tracts or parcels of land for which damages have been allowed, in proportion to the allowance for each, and paying the respective amounts to the owner thereof.