IHNC Lake Borgne Surge Barrier, Flood barrier in New Orleans, United States
The IHNC Lake Borgne Surge Barrier extends 1.8 miles across the Gulf Intracoastal Waterway and Mississippi River Gulf Outlet near New Orleans.
Following Hurricane Katrina in 2005, the U.S. Army Corps of Engineers constructed this $1.3 billion barrier as part of the Hurricane and Storm Damage Risk Reduction System.
The barrier, nicknamed the Great Wall of Louisiana, represents the commitment of New Orleans residents to protect their communities from future flooding events.
The structure includes a 150-foot-wide sector gate and a vertical lift gate to allow maritime traffic while maintaining protection against storm surges.
The barrier contains 1,271 concrete piles measuring 66 inches wide and 144 feet long, making it the largest continuous storm surge barrier in the United States.
Location: Louisiana
GPS coordinates: 30.00560,-89.90140
Latest update: March 26, 2025 06:37
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