La. Stat. tit. 33 § 3451
Municipalities may, upon the petition of property owners as herein set forth, provide by ordinance for any special improvements to any street, sidewalk and neutral ground, and/or to any portion thereof, including but not limited to, the planting of trees along the streets, sidewalks, and neutral grounds, the beautifying of streets, sidewalks and neutral grounds, the building of a mall out of the streets, sidewalks and neutral grounds, the installation of walkways, decorative sidewalks, fountains, shelters, rest areas, planters, the planting of trees, flowers and shrubbery, street lighting, the closing of streets or portions thereof, the closing of canals or open ditches and the construction and improvement of off-street parking facilities.
La. R.S. § 33:3451