La. Stat. tit. 45 § 1192
If any of the persons, mentioned in R.S. 45:1191, or other party in interest, shall be dissatisfied with any order entered by the commission, adopting, fixing, changing, altering, or modifying, any rate, classification, rule, charge, or general regulation, and no application for rehearing is filed, the dissatisfied person may, within forty-five days after the order made by the commission becomes effective, file in a court at the domicile of the commission, a petition setting forth the particular cause of objection to the order or regulation of the commission complained of. When a timely application for a rehearing has been made at the commission, the time for appeal does not commence until the date of the commission order disposing of the rehearing application. All such cases shall be tried in the same manner as civil cases and shall be given precedence over all other civil cases in the court, and shall be heard and determined as speedily as possible. The court may affirm the order of the commission complained of, or it may change, modify, alter, or set it aside, as justice may require.
La. R.S. § 45:1192