Resources LA 1 traverses through coastal wetlands in southern Lafourche Parish. LA Highway 1 Improvement Project – Phase 2 Project Map LA Highway 1 Improvement Project Brochure – June 2017 Port Fourchon/LA 1 Economic Impact Study – October 2014 LA 1/Port Fourchon USDHS Study – July 2011 GeauxPass LA 1 Toll Payments