IHNC Lake Borgne Surge Barrier
Inner Harbor Navigation Canal Lake Borgne Surge Barrier | |
---|---|
US Army Corps of Engineers | |
Characteristics | |
Material | Concrete, steel |
Total length | 1.8 miles |
History | |
Construction start | 2008 |
Construction end | 2013 (major construction)[1] |
Construction cost | $1.1 billion[2] |
Location | |
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The Inner Harbor Navigation Canal Lake Borgne Surge Barrier is a storm
Navigation gates where the barrier crosses the GIWW and Bayou Bienvenue can be worked to reduce the risk of storm surge coming from Lake Borgne and/or the Gulf of Mexico. Another navigation gate (Seabrook Floodgate) has been constructed in the Seabrook vicinity, where the IHNC meets Lake Pontchartrain, to block a storm surge from entering the IHNC from the Lake.
Purpose
The
Status
The project was funded by the
In October 2008, the New Orleans District Commander of the
In December 2008, the Corps held a
On 29 August 2012 (the seventh anniversary of Hurricane Katrina), the barrier was used for the first time, to protect the city from Hurricane Isaac.[4] By June 2013, all major construction had been completed.[1]
Construction
The COE accomplished this project via the design-build delivery method. The main barrier consists of 1,271 concrete piles 66 inches (1.7 m)[5] across and 144 feet (44 m) long, weighing 96 tonnes each. Behind those piles, steel piles are driven at an angle of 2 horizontal to 3 vertical. The steel piles are 288 feet long and are installed in two sections, with the lower 158-foot section driven and the upper 130-foot section fitted on top and welded in place. A precast concrete pile cap is placed on top of the steel batter piles and concrete plumb piles to join them.
Two gates were constructed in the Gulf Intracoastal Waterway navigation channel. One gate is closed with two
Features
- Typical flood wall and the MRGO closure flood wall (over a mile long)[6]
- 150-foot wide navigable floodgate on the GIWW—a steel sector gate (42 feet tall)[7][8]
- 150-foot wide navigable bypass floodgate on the GIWW—a concrete barge swing gate
- 56-foot wide navigable floodgate on Bayou Bienvenue—a steel lift gate
- Concrete T-walls on land, at the north and south ends of the Lake Borgne barrier
- Approach walls at the GIWW sector gate and the Bayou Bienvenue gate
- Navigation gate in the Seabrook vicinity
- wetlandshabitats to enhance environmental conditions
Engineering
COWI Marine North America, formerly Ben C. Gerwick, Inc., provided the detailed designs and drawings[9] for
- The main barrier, including the flood wall and the MRGO closure[6][10][11][12]
- The GIWW sector gate monolith walls and foundation[7][8][13][14][15][16][17]
- The GIWW bypass concrete barge swing gate[9][13][18][19][20]
- The GIWW bypass concrete barge swing gate mechanical operating systems
- Approach walls at the GIWW sector gate
- Scour stone protection for the barrier and gates
INCA (now TETRA TECH, INC.) provided the detailed designs and drawings[21][22][23][24][25][26][27] for:
- GIWW Sector Gate
- GIWW Bypass Approach Walls
- Bayou Bienvenue Lift Gate Monolith
- Bayou Bienvenue Tower and Bridge
- Bayou Bienvenue Lift Gate (with Waldemar Nelson)
- Bayou Bienvenue Approach Walls
![](http://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png)
Sources
- ^ a b "IHNC Lake Borgne Surge Barrier" (PDF). U.S. Army Corps of Engineers. June 2013. Retrieved December 12, 2013.
- ^ "USA, New Orleans: $1.1 billion surge barrier construction works half way". Dredging Today. February 2010.
- ^ "Archithings.com". Archived from the original on 2010-10-11.
- ^ "Corps Closes More Floodgates as Hurricane Isaac Approaches - NOLA DEFENDER". noladefender.com.
- ^ Construction photo of concrete piles
- ^ a b Finite Element SSI Analyses of IHNC Flood Wall
- ^ a b A Design-Build Success: The GIWW Sector Gate Monolith
- ^ a b Sector Gate Monolith Pile Foundation
- ^ a b Inner Harbor Navigation Canal Hurricane Protection Project
- ^ 2011 ENR Best Civil Works/ Infrastructure Project for the Inner Harbor Navigation Canal
- ^ "2011 DFI Outstanding Project Award for the Inner Harbor Navigation Canal Flood Wall" (PDF). Archived from the original (PDF) on 2014-03-17. Retrieved 2014-03-17.
- ^ "Recent Awards & Achievements". seaonc.org. Archived from the original on 2014-03-17. Retrieved 2014-03-17.
- ^ a b "Recent Awards & Achievements". seaonc.org. Archived from the original on 2014-03-17. Retrieved 2014-03-17.
- ^ "Past Award Recipients". seaoc.org.
- ^ "2013 NCSEA Excellence in Structural Engineering Award Outstanding Project ("Other" Structures) for the GIWW Sector Gate Monolith". Archived from the original on 2014-03-17. Retrieved 2014-03-17.
- ^ "NCSEA" (PDF). ncsea.com.
- ^ "2013 NCSEA Excellence in Structural Engineering Award Outstanding Project ("Other" Structures) for the GIWW Sector Gate Monolith" (PDF). Archived from the original (PDF) on 2014-03-17. Retrieved 2014-03-17.
- ^ "2013 NCSEA Excellence in Structural Engineering Award (New Bridges & Transportation Structures) for the Gulf Intracoastal Waterway Barge Gate". Archived from the original on 2014-03-17. Retrieved 2014-03-17.
- ^ 2013 NCSEA Excellence in Structural Engineering Award (New Bridges & Transportation Structures) for the Gulf Intracoastal Waterway Barge Gate
- ^ "2013 NCSEA Excellence in Structural Engineering Award (New Bridges & Transportation Structures) for the Gulf Intracoastal Waterway Barge Gate" (PDF). Archived from the original (PDF) on 2014-03-17. Retrieved 2014-03-17.
- ^ USACE, 2016. Inner Harbor Navigation Canal (IHNC) Hurricane Protection Project Design Documentation Report. U.S. Army Corps of Engineers, New Orleans District. June, 2016. 798 pp.
- ^ "Climate Adaptation Knowledge Exchange (CAKE) Case Study".
- ^ "2012 ACEC Grand Conceptor Award".
- ^ "2014 ASCE Outstanding Civil Engineering Achievement OPAL Award". Archived from the original on 2018-12-17. Retrieved 2020-09-04.
- ^ "2014 ASCE Outstanding Civil Engineering Achievement OPAL Award".
- ^ "FIDIC's Outstanding Project of 2014 award".
- ^ "FIDIC's Outstanding Project of 2014 award" (PDF).