La. Stat. tit. 41 § 1133
If an amicable agreement cannot be so arrived at, the differences in question shall be submitted to commissioners who shall be the attorney general and the chief engineer in the Department of Transportation and Development, representing the state, two persons named by the land owner and a fifth person who shall be selected by these first four named commissioners. A proces verbal of the findings of the commissioners shall be executed in quadruplicate originals, one copy to be filed with the Department of Transportation and Development, one with the register of the state land office, one copy to be recorded in the parish in which the land is situated, and one copy to be furnished the owner of the contiguous or abutting land.
La. R.S. § 41:1133