(a) Directly or indirectly from or through its political subdivisions, this state shall acquire and convey to the United States the necessary areas in fee simple, together with landscape, sightly, safety, or scenic easements, and rights-of-way for connections to the approaches of trans-Mississippi River bridges, subject to such flowage, revetment, bank protection, levee, or other river control, harbor line, and navigation reservations or rights as the Secretary of Defense may determine are essential for navigation or flood control purposes.
(b) The titles and evidences of titles to areas so acquired, for protection to the United States in case of use or occupancy thereof, shall be satisfactory to the Secretary.
(c) Deeds shall be accompanied by land maps, survey notes, and closure sheets.
(d) Parkway areas as acquired by this state and scenic, landscape, sightly, or safety easements on additional areas shall be in accordance with preliminary development and property maps submitted to the state by the United States Secretary of the Interior.
(e) State agencies and interstate or intrastate utilities having fiscal or other interests in any properties may join in or execute releases for parkway areas or easements.
(f) Parkway area acquisition shall be undertaken in units of sufficient length to justify placing the units under contract for construction of the parkway road as soon as acquired by the state and accepted by the Secretary.