The shields of Arkansas' primary and auxiliary Interstate highways. There are six primary Interstate highways and eight auxiliary Interstate highways in Arkansas. Interstate 30 (I-30) - Runs from the Texas state line at Texarkana, AR to the Mississippi state line on the Mississippi River west of Sherard, MS. Interstate 40 (I-40) - Runs from the Oklahoma state line to the Tennessee state line. Interstate 49 (I-49) - Runs from the Missouri state line north of Gravette, AR to the Louisiana state line, and briefly dips into Texas for about five miles near Texarkana, AR. Interstate 55 (I-55) - Runs from the Missouri state line to the Tennessee state line. Interstate 57 (I-57) - Runs from the Missouri state line south of Neelyville, MO to I-30/530 northwest of White Hall. Interstate 69 (I-69) - Runs from the Louisiana state line northeast of Haynesville, LA to the Mississippi line near Shives, AR. Interstate 230 (I-230) - Runs from I-30 at Fenter Township to I-57 ...