A. Port authorities located in a parish with a population of fifty thousand persons or more shall be responsible for the preparation of plans and specifications for their respective port project. These authorities shall also be responsible for the letting of bids for construction, and the supervision of construction for all projects, all in accordance with the provisions of this Chapter.
B. For port authorities located in a parish with a population of less than fifty thousand persons, the department may prepare the necessary plans and specifications, may let the contract for bid, and may supervise the construction of the project.