Louisiana Revised Statutes Tit. 33, § 140.50.24. Establishment of official map

A. After the town council and the police jury have adopted a master plan which includes at least a major street plan, or the commission has progressed in its master planning to the state of the making and recommending of a major street plan, and shall have certified a copy of such major street plan to the town council and one to the police jury, then the town council and the police jury may establish an official map of the municipality, in the case of the town council, and that part of the parish within the area included within the adopted plan but outside the municipality, in the case of the police jury.

B. The official map shall show the location of the streets existing and established by law as public streets. Such official map may also show the location of the lines of streets on plats of subdivisions which have been approved by the commission. The town council and the police jury shall certify the fact of the establishment of the official map to the clerk of court and recorder of the parish.