Miss. Code Ann. § 55-13-7

The Mississippi State Highway Department, in the acquisition of the lands hereinabove described, shall have full power and authority to condemn such lands for said right-of-way, parkway and scenic easement purposes as is otherwise provided under the laws of the State of Mississippi, condemning such lands to an amount of not more than one hundred (100) acres on the average to the mile of such roadway in the State of Mississippi, and such scenic easements in addition thereto as may be required, not exceeding, however, the amount of fifty (50) acres on the average to the mile of such roadway in the State of Mississippi. This right is in addition to any rights which the highway department may have at the present time as to the width of roadways which may be condemned for roadway purposes in the State of Mississippi, it being the intention of this section to confer the right to extend the width of such roadways for roadway and parkway purposes to an amount limited, as herein above set forth, to one hundred (100) acres on the average to the mile of such roadway in the State of Mississippi, and such scenic easements in addition thereto as may be required, not exceeding, however, the amount of fifty (50) acres on the average to the mile of such roadway in the State of Mississippi.