La. Civ. Code art. 458
Current with changes from Acts 3, and 6-45 of the 2024 Legislative Session
Works built without lawful permit on public things, including the sea, the seashore, and the bottom of natural navigable waters, or on the banks of navigable rivers, that obstruct the public use may be removed at the expense of the persons who built or own them at the instance of the public authorities, or of any person residing in the state.
The owner of the works may not prevent their removal by alleging prescription or possession.
La. C.C. § 458