High Quality Content by WIKIPEDIA articles! Interstate 69 (I-69) is an Interstate Highway in the United States. It exists in two parts: a completed highway from Indianapolis, Indiana, northeast to the Canadian border in Port Huron, Michigan, and a mostly proposed extension southwest to the Mexican border in Texas. Of this extension – nicknamed the NAFTA Superhighway because it would help trade with Canada and Mexico spurred by the North American Free Trade Agreement – only three short pieces—a 6.2 mile (10.0 km) section near Corpus Christi, Texas, one in northwestern Mississippi and in the Memphis, Tennessee area and a 1.73-mile segment near Evansville, Indiana--have been built and signed as I-69 (see Interstate 69 in Mississippi and Interstate 69 in Indiana). A fourth segment of I-69 through Kentucky, 145 miles (232 km) long utilizing that state`s existing parkway system and a section of Interstate 24, was established by federal legislation in 2008, but the Federal Highway Administration did not authorize the parkways to be signed as I-69 until upgrades of certain sections are complete. A 55-mile (88.5 km) section of the previously existing Western Kentucky Parkway from Eddyville to Nortonville was recently approved and signed. .