La. Roads, Bridges and Ferries § 48:581
The officers of the governing authority of the parish in which the particular district is located are the officers of the district. They shall serve without extra compensation. Where a district is composed of territory located wholly within one parish, the parish treasurer's bond also covers and guarantees the faithful performance of his duties as treasurer of the district.
Where a district is composed of territory partly within two or more parishes, the officers of the governing authority of the parish furnishing the most territory are the officers of the district. The treasurer of a district lying partly within two or more parishes shall furnish a special bond to be fixed by the governing authority of the district for the faithful performance of his duties as such. The premium thereof shall be paid by the district.
La. Roads, Bridges and Ferries § 48:581