High Quality Content by WIKIPEDIA articles! Interstate 30 (I-30) is an Interstate Highway in the southern United States. I-30 runs from Interstate 20 west of Fort Worth, Texas, northeast via Dallas, Texas, and Texarkana, Texas, to Interstate 40 in North Little Rock, Arkansas. The route parallels U.S. Route 67 except for the portion west of downtown Dallas (which was once part of Interstate 20). I-30 intersects with only two of the 10 primary north–south interstates (I-35W, I-35E and I-45) and also with the major Interstate routes I-20, and I-40.