Description
LPV-03a.1 - West Return Floodwall - Vintage-Phase 1
Floodwall - Repair and improvements to stability
Physically complete 30 Jun 06
This segment of the HPS consists of about 1600 linear feet of the West Return Floodwall in Jefferson Parish in the vicinity of Vintage Blvd. The existing protection is a concrete capped I-Wall which was damaged (deflected) by Hurricane Katrina. This contract provides for construction of about 1600 linear feet of new I-Wall, using longer and heavier steel sheet pile sections, plus a small earthern berm and scour protection (slope paving) on the landside of the new I-Wall.
LPV-03b.1 - West Return Floodwall, Airport I-wall- Phase 1
Floodwall - Improve Stability. Pull old I-wall. Drive new uncapped sheetpile.
This segment of the HPS consists of roughly 500 foot long section consisting of a low levee with a steel sheet pile I-wall extending approximately 6.5 feet above ground level having a top elevation roughly matching the end of the reinforced concrete T-wall immediately adjacent to the north. The first 175 foot long section running roughly north/south as an extension of the West Return T-wall floodwall is a legacy element from the levee and I-wall system constructed many years ago along the St. Charles Parish – Jefferson Parish boundary line. The remaining 400 feet of I-wall runs east/west from the end of the first segment and was installed by others as part of the construction of the Armstrong International Airport East/West Runway extension accomplished during the late 1980’s. These I-wall segments do not comply with current design standards for I-walls in regards to both strength and stability. This contract consists of an interim measure involving the addition of earthen material to the berm areas on both the flood and protected sides of the wall alignment, and the driving of a parallel row of longer, stronger steel sheet piles immediately adjacent to certain sections of the wall. Once new standards for the LPV system are established the interim plan will be replaced by an appropriate permanent replacement system.
LPV-03c.1 - West Return Floodwall- I-wall @ I-10- Phase 1
Floodwall - Improve stability.
This segment of the HPS consists of a 460 LF section of sheet pile founded reinforced concrete I-wall underneath the I-10 highway on the Jefferson-St Charles Parish line. The existing floodwall is deficient in elevation (due to constraints imposed by the existing highway) and stability. This contract will reduce the stick-up of the existing wall to improve stability.
LPV-03d.2 - Airport Runway10 Levee - Phase II
Levee - Bring to 100 year level of protection.
The existing levee segment, which is approximately 3200 feet in length adjoins LPV-04.2B on the south and the West Return Floodwall to the north.The existing levee is deficient in cross section and elevation and does not meet new design standards. Primary design and construction considerations include maintaining operation of the runway during construction, maintaining visibility and alignment of the runway approach lighting, and coordination of all activity with the Airport Authority. The levee work will include a 45' floodside shift.
LPV-03.2A - West Return Floodwall (Southern Segment) - Phase 2
Floodwall - Bring to design elevations and stability. Construct to 100 year level of protection
This segment of the HPS consists of about 3.3 miles of floodwall, beginning in the vicinity of the New Orleans International Airport and extending northward along the Jefferson-St. Charles Parish line to the Lakefront levee on the south shore of Lake Pontchartrain. The existing floodwall is a combination of sections of T-wall and I-wall and the entire wall is deficient in elevation, stability and scour protection. This contract will provide reconstruction of the existing floodwall with a new floodwall or levee to provide a 100 year level of protection.
LPV-03.2B - West Return Floodwall (Northern Segment) - Phase 2
Floodwall - Bring to design elevations and stability. Construct to 100 year level of protection
This segment of the HPS consists of about 3 miles of floodwall, beginning at Interstate Highway 10 and extending northward along the Jefferson-St. Charles Parish line to the Lakefront levee on the south shore of Lake Pontchartrain. The existing floodwall is a combination of sections of T-wall and I-wall and the entire wall is deficient in elevation, stability and scour protection. This contract will provide reconstruction of the existing floodwall with a new floodwall to provide a 100 year level of protection.
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