Interstate 2 (I-2) is a west–east Interstate Highway running through the Lower Rio Grande Valley of South Texas. It begins at the intersection of U.S. Highway 83 (US 83) and Business US 83 west of Palmview and heads eastward before terminating at I-69E/US 77 in Harlingen. For its entire length, I-2 shares its alignment with US 83. I-2 also parallels Mexican Federal Highway 2, a major east–west route that traces the Mexico-U.S. border along the Mexican side of the Rio Grande.