Interstate 49 (I-49) is an Interstate Highway that exists in multiple segments: the original portion entirely within the state of Louisiana with an additional signed portion that was expanded from LA 3194 in Shreveport to the Arkansas state line, four newer sections in Arkansas, and a new section that opened in Missouri. Its southern terminus is in Lafayette, Louisiana, at Interstate 10 while its northern terminus is in Kansas City, Missouri at Interstate 435 and Interstate 470.