Miss. Code § 65-23-309
Any such county acting separately or jointly with another county is hereby authorized and empowered to construct, whenever it shall deem such construction expedient, any toll bridge located as provided in Section 65-23-305. Authority is hereby granted to any such county or counties to purchase, solely from funds provided under the authority of this article, such lands, rights of way, easements, and other interests in lands, including lands under water and riparian rights of any person, copartnership, association, railroad or other corporation, municipality, or political subdivision, deemed necessary for the construction of any such bridge, upon such terms and at such prices as may be considered by it or them to be reasonable and can be agreed upon between it or them and the owner thereof, and to take title thereto in the name of such county or counties. Any such county or counties may acquire such lands, rights of way, easements, and other interest in land by eminent domain in the manner now provided by law. The State of Mississippi hereby consents to the use of all lands lying under water, which are within the state and are necessary for the construction and operation of any such bridge and the approaches and appurtenances thereto.
Miss. Code § 65-23-309