Interstate 30 (I-30) is an Interstate Highway in the southern United States. While most interstate routes ending in zero are major cross country routes, I-30 is a comparatively short regional route serving only two states. I-30 runs from I-20 west of Fort Worth, Texas, northeast via Dallas, Texas, and Texarkana, Texas, to I-40 in North Little Rock, Arkansas. The route parallels U.S. Route 67 (US 67) except for the portion west of downtown Dallas (which was once part of I-20).