On Wednesday, March 23, 2005, Gov. Ernie Fletcher unveiled signs to mark the proposed corridor of I-66 through Southern Kentucky at events in Glasgow and Columbia. As of Friday, March 25, 2005 at least two of these signs had been installed along the Louie B. Nunn Cumberland Parkway: one along the parkway’s eastbound lanes at its western terminus and one along the westbound lanes at exit 11.

See also: Louie B. Nunn Cumberland Parkway route marker and Future I-66 Corridor marker.