AN ACT TO DESIGNATE A SEGMENT OF MISSISSIPPI HIGHWAY U.S. HIGHWAY 278 LOCATED IN THE TOWN OF SHANNON, LEE COUNTY, MISSISSIPPI, AS THE "JOHNNY R. PATTERSON MEMORIAL HIGHWAY"; TO DESIGNATE A SEGMENT OF MISSISSIPPI HIGHWAY 25 LOCATED IN TISHOMINGO COUNTY, MISSISSIPPI, AS THE "DR. KELLY S. SEGARS, SR. AND MARTHA SEGARS MEMORIAL HIGHWAY"; AND FOR RELATED PURPOSES.