Miss. Code § 65-39-37
The Mississippi Transportation Commission may require the Mississippi Department of Transportation to provide the twenty percent (20%) state matching share and federal nonparticipating costs for Special Category Projects as provided for in Public Law 102-240 (the Intermodal Surface Transportation Efficiency Act of 1991). In addition to any other authorized use, such funds may be expended for Special Category Projects within Public Law 102-240 as set forth in Section 1103 "High Cost Bridge Projects," Section 1104 "Congestion Relief Projects," Section 1105 "High Priority Corridors on National Highway System," Section 1106 "Rural and Urban Access Projects," Section 1107 "Innovative Projects," and Section 1108 "Priority Intermodal Projects." The department shall use funds obtained pursuant to this section for the specific purpose of facilitating the use of additional eighty percent (80%) federal funds provided to the Mississippi Department of Transportation from the Congress of the United States throughout each of the five (5) Congressional Districts of the State of Mississippi. The department also shall utilize any funds obtained pursuant to this section to provide the state matching share and nonparticipating share for preliminary engineering and right-of-way acquisition work for all projects so authorized and shall provide the state share and nonparticipating portion for all projects for which the federal share of the construction is provided through funds not within the normal annual apportionment of the Highway Trust Fund to the State of Mississippi.
Miss. Code § 65-39-37