Other alignment changes have resulted from the construction of bridges and the smoothing out of curves along much of the route. LA 6 originally entered Louisiana by crossing the Sabine River on a bridge built in 1937 at the former community of Pendleton, Texas. The current bridge, much longer in length, was constructed in 1963 when the river became part of the Toledo Bend Reservoir. Two miles of previously dry land at the western end of LA 6, an area formerly known as East Pendleton, are now under water crossed by the current bridge, which follows a slightly straighter alignment than the old road. Approaching the eastern terminus at Clarence, LA 6 originally crossed the Red River at Grand Ecore on a now-demolished bridge that existed immediately to the east of the current span built in 1959.