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permission to modify the Bayou aux Carpes 1985 determination to allow for construction on the westernmost boundary of the wetland area. The Corps held a joint public hearing with the EPA to address all questions and concerns regarding the request for modification of the Bayou Aux Carpes 404(c) area.
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was constructed on the channel side of the floodwall to protect it from barge impacts. Foreshore protection was constructed along the GIWW, adjacent to, but not within, the Bayou aux Carpes CWA Section 404(c) area and along the new earthen levee to prevent impacts due to discharges from the pump
276:. The project also required the dredging of Algiers Canal, as well as the realignment of Bayou Road. Project challenges consist of maintaining navigation traffic on the GIWW (a Federal navigation channel with heavy commercial barge traffic) and the location of the complex in relationship to the
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for pile load testing and pre-construction services. The ECI contracting method (also known as
Construction Management at Risk in private industry) allows the construction contractor to work hand-in-hand with the Corps and the design team on plan revisions and construction sequencing that will
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The GIWW West
Closure Complex reduces the risk to a large area of the west bank by removing over 25 miles (40 km) of levees, floodwalls, a floodgate, and pumping stations along the Harvey and Algiers canals from the direct impacts of storm surge. The risk reduction
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south to the confluence of the Harvey and
Algiers canals, a distance of approximately 4.8 miles (7.7 km). Approximately 700,000 cubic yards of material has been excavated from the Algiers Canal. Consequently, the dredged material was used beneficially in a
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404(c) area, the floodwall was constructed on the eastern edge of the wetlands, within 100 feet (30 m) from the western bank of the GIWW for a 4,216 feet (1,285 m). The floodwall starts north of the pump station and gate structure with a
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When the gate is closed during a storm event, the 19,426 cubic feet per second (cfs) (551 m/s) 11 bay pump station is required to evacuate the rainwater that is pumped into the Harvey and
Algiers canals by 9 other pump stations along the
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Final approval of the
Individual Environmental Report #12 for the GIWW West Closure Complex was completed on February 18, 2009. On May 28, 2009, the Environmental Protection Agency granted the
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improve the constructability and cost-savings of the project. Several more construction options have been awarded since April. Construction of
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The pump station complex, which is the largest of its type in the world, consists of 11 each 5,444 horsepower
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472:"New Orleans District Website > Missions > HSDRRS > Notification of Construction Complete Letters"
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Bayou Road has been realigned to provide access around the new levee on the protected side.
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432:"Corps of Engrs closes and operates West Closure Complex for the first time for storm"
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has been constructed east of the closure complex and ties into the existing levees.
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The project is located approximately one half mile south of the confluence of the
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with reduced pumping capacity. All project construction was completed in 2012.
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Gulf IntraCoastal
Constructors, a Joint Venture of Kiewit and Traylor Bros
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The Notice of
Construction Complete was issued on April 8, 2014.
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Installation of a 653 ton Sector Gate Leaf at GIWW West
Closure
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On April 17, 2009, the Corps awarded the base portion of the
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Southeast
Louisiana Flood Protection Authority West Web Site
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458:"Gulf Intracoastal Waterway West Closure Complex Project"
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The GIWW West
Closure Complex consists of a navigable
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354:(JLNHPP) or placed in borrow sites near Walker Road.
590:Flood control in the New Orleans metropolitan area
560:Transportation infrastructure in the United States
352:Jean Lafitte National Historical Park and Preserve
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430:U.S. Army Corps of Engineers (August 29, 2012).
410:of the 653 ton ea. sector gates was completed.
174:Gulf Intracoastal Waterway West Closure Complex
23:Gulf Intracoastal Waterway West Closure Complex
292:A 225 feet (69 m) navigable floodgate
306:To minimize environmental impacts to the
585:Buildings and structures in New Orleans
16:Bridge in Plaquemines Parish, Louisiana
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580:United States Army Corps of Engineers
503:US Army Corps of Engineers Web Site
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396:features began on 6 August 2009.
490:Engineering News Record Web Site
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288:area of national significance.
278:Environmental Protection Agency
244:area of national significance.
555:Water transport infrastructure
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389:Gulf Intracoastal Constructors
365:2011 Atlantic hurricane season
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94:Plaquemines Parish, Louisiana
385:Early Contractor Involvement
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399:On March 6 & 10, 2011,
341:has been competed from the
272:protection, and an earthen
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200:protection, and an earthen
178:New Orleans Drainage System
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565:Dikes in the United States
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377:US Army Corps of Engineers
234:Gulf Intracoastal Waterway
104:US Army Corps of Engineers
84:Gulf Intracoastal Waterway
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317:Old Estelle Outfall Canal
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575:Intracoastal Waterway
363:was completed by the
315:structure across the
284:(CWA) 404(c) area, a
240:(CWA) 404(c) area, a
64:29.81556°N 90.06833°W
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438:on October 17, 2012
343:Belle Chasse Tunnel
69:29.81556; -90.06833
60: /
595:Water in Louisiana
520:2010-04-21 at the
495:2009-02-27 at the
406:2011-07-14 at the
387:(ECI) contract to
208:associated with a
138:Construction start
348:marsh restoration
176:is a part of the
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154:Construction cost
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535:official website
509:Pop Sci Web Site
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434:. Archived from
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337:Dredging of the
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146:Construction end
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350:project in the
282:Clean Water Act
258:pumping station
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238:Clean Water Act
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214:Hurricane Isaac
186:pumping station
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118:Concrete, steel
110:Characteristics
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529:External links
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327:A new earthen
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440:. Retrieved
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266:sluice gates
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194:sluice gates
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157:~$ 1 Billion
442:November 2,
301:Caterpillar
206:storm surge
190:flood walls
141:August 2009
67: /
42:Coordinates
544:Categories
262:floodwalls
149:April 2014
55:90°04′06″W
52:29°48′56″N
550:Hydrology
270:foreshore
254:floodgate
198:foreshore
182:floodgate
518:Archived
493:Archived
484:NOLA.com
404:Archived
324:station.
303:engines.
248:Features
220:Location
162:Location
115:Material
417:Sources
296:canals.
286:wetland
242:wetland
230:Algiers
123:History
80:Crosses
371:Status
226:Harvey
90:Locale
329:levee
274:levee
202:levee
100:Owner
444:2012
321:berm
256:, a
228:and
184:, a
172:The
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
