Miss. Code Ann. § 55-5-23

The State Highway Commission shall have full authority to make such investigations, surveys, studies and plans in connection with any proposed national parkway or parkway development as it shall deem necessary or desirable in order to determine if the proposed development, under the terms of the act of the United States Congress applicable to such parkway or any regulation, under such act, are advantageous to the state. Such parkway development may be any portion of the proposed parkway, which it may be proposed to construct as a project under such act. The State Highway Commission may hold such hearings in connection with such investigations as it shall deem necessary or desirable, and shall give at least seven (7) days’ notice of such hearings by publication in at least two (2) newspapers having general circulation in the locality.