La. Stat. tit. 33 § 191
Current with changes from the 2024 legislative session effective on or before 7/1/2024, from Acts 1-3, 6-671
Any two contiguous municipalities, lying in the same parish, may consolidate and become one municipality in the manner provided in this Subpart. For this purpose municipalities separated only by a river or other stream or body of water not more than two miles in width shall be deemed to be contiguous.
La. R.S. § 33:191