Miss. Code § 65-3-34
The Mississippi Department of Transportation shall construct and reconstruct to department design standards four (4) lanes for traffic on and along Mississippi Highway 552 in Jefferson and Claiborne Counties beginning at its intersection with United States Highway 61 in Jefferson County and extending to Alcorn State University in Claiborne County. The Transportation Department shall also construct an interchange at the intersection of newly constructed Mississippi Highway 552 and United States Highway 61. Such highway and interchange shall be under the jurisdiction of the Mississippi Transportation Commission for construction and maintenance and, together with the highways designated in Sections 65-3-3 and 65-3-5, and all other laws adding links to the state designated highway system, are declared to be the State Highway System of Mississippi.
Miss. Code § 65-3-34