 In the summer of 1966, I-20 was opened in Bossier City from the Red River Bridge at Traffic Street to Barksdale Boulevard (US 71).As part of this construction, the southernmost portion of LA 3 was shifted onto a new connector, in length, known as Benton Spur in order to be aligned with a partial interchange with I-20 at LA 72 (Old Minden Road).The former route along Benton Road then became LA 3 Spur until its deletion from the state highway system in 2010.