La. Civ. Code art. 666
Current with operative changes from the 2024 Third Special Legislative Session
He who from his title as owner is bound to give a public road on the border of a river or stream, must furnish another without any compensation, if the first be destroyed or carried away.
English translation of French text incomplete; should include "by the stream."
And if the road be so injured or inundated by the water, without being carried away, that it becomes impassable, the owner is obliged to give the public a passage on his lands, as near as possible to the public road, without recompense therefor.
La. C.C. § 666