These two Sector Gates are part of the Hurricane Storm and Damage Risk Reduction System that was constructed by the U.S Army Corps of Engineers after Hurricane Katrina. They connect to the levees and floodwalls that run parallel to the south bank of the Gulf Intracoastal Waterway (GIWW) and the Mississippi River Gulf Outlet (MRGO). Each consists of a 56’ wide navigable sector gate at a height of 32 feet above sea level that is designed to prevent storm surge from impacting highly populated areas of St. Bernard Parish and the Lower 9th Ward of New Orleans.
Bayou Bienvenue Sector Gate
Bayou Bienvenue Lift Gate
Bayou Dupre Sector Gate
In addition, there are two, 56 feet-wide navigable lift gates that accommodate boat traffic and can be closed in advance of a storm event. These structures are designed to reduce the risk of flooding caused by a 100-year storm that has a 1% chance of occurring each year.
Operation & Maintenance
Once construction was completed in 2013, the U.S Army Corps of Engineers transferred responsibility of operation and maintenance to the Flood Protection Authority-East.