 LA 45 continues northward on Barataria Boulevard through the preserve for another , at which point the highway passes through a floodwall and into a suburban area known as Estelle.After curving to the northeast, LA 45 widens to a divided six-lane highway and reaches its fourth and final junction with LA 3134 at the latter's northern terminus.LA 45 continues into the heavily populated suburban community of Marrero and intersects Lapalco Boulevard, a busy commercial thoroughfare.