La. Stat. tit. 44 § 23
Notwithstanding the provisions of R.S. 44:31, 32, or 33, a preconstruction estimate for a project advertised and let or for a project to be advertised and let by the Department of Transportation and Development shall not be available for examination, inspection, copying, or reproduction until the date that the bids for such project are opened. If the custodian of such a record receives a request for a preconstruction estimate prior to the date the bids for such project are opened, the custodian shall notify the requestor that the record is not available and shall specify the date that the record will be available. Notwithstanding the provisions of this Section, the estimated cost range for a department project shall be available, upon request.
La. R.S. § 44:23