presentation to orleans levee district lake pontchartrain and vicinity levees lpv101 - 104 20...
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Presentation toOrleans Levee District
Lake PontchartrainAnd Vicinity Levees
LPV101 - 104
20 September 2006
Presentation toOrleans Levee District
Lake PontchartrainAnd Vicinity Levees
LPV101 - 104
20 September 2006
One Team: “Relevant, Ready, Responsive, Reliable”19 September 06 2
Goal
Provide protection from storm surge that has a one percent probability of occurring in any year.Phase One: Raise levees to the authorized elevation and perform other critical work. Phase Two: Raise the levee system, including floodwalls, ramps, and gates, to the authorized or 100 year level, whichever is higher.
One Team: “Relevant, Ready, Responsive, Reliable”19 September 06 3
Overall map
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Project Reaches
Multi-district teams led by:
LPV101 – St. Louis District
LPV102 – Memphis District
LPV103 – St. Paul District
LPV104 – Rock Island District
LPV101 - 104 Gates – Vicksburg District
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Project Reaches – LPV101
Location: 17th Street Canal to Floodwall @ Lakeshore Drive
Levee: 325 feet Floodwall: 2,600 feet Ramps and gate structures: No ramps, 7
gates
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Map of LPV101
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Project Reaches – LPV102
Location: Floodwall @ Lakeshore Drive to Orleans Avenue Canal
Levee: 6,500 feet Floodwall: None Ramps and gate structures: 1 ramp, 1 gate
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Map of LPV 102
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Project Reaches – LPV103
Location: Orleans Avenue Canal to London Avenue Canal
Levee: 7,190 feet Floodwall: 2,330 feet Ramps and gate structures: 4 ramps, 1
gate Sector gate on Bayou St. John
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Map of LPV103
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Project Reaches – LPV104
Location: London Avenue Canal to IHNC Levee: 9,400 feet Floodwall: 3,400 feet Ramps and gate structures: 4 ramps, 5
gates
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Map of LPV104 - West
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Map of LPV104 - East
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Phase One ConstructionLevees:
Raise existing levees to authorized grade
Floodwalls:Modify I-walls if necessary.Concrete pad for scour protection of I-WallsEmbankment berm for I-Wall stabilityScour protection at I-Wall transitions into levee
Gates and ramps:Remove gate at Topaz Street and replace with
earthen embankment
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Phase Two ConstructionLevees:
Raise levees to 100 year level of protectionFloodwalls:
Raise or replace walls to provide 100 year level of protection.
Scour protection at transitions wall to levee. Raise or replace Sector Gate Structure at Bayou St. John
to provide 100 yr level of protectionGates and ramps:
Reconstruct gates to provide 100 year level of protection Raise ramps at Canal Boulevard, Lakeshore Drive at Rail
Street, Lake Terrace Drive at Bayou St. John, and Lakeshore Drive at intersection with Lake Terrace Drive at London Canal
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Construction Schedule
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Quality Control andQuality Assurance Processes
Independent Technical Review (ITR)
Value Engineering (VE)
Biddability, Constructability, Operability and Environmental (BCOE) Review
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LPV101
Key Design Issues: Floodwall Alignment at Marina Gate L4 relocation Pedestrian Gate L1B abandonment Pump station culvert modification Possible replacement of Gate L1A with ramp
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LPV102
Key Design Issues: Topaz St. Gate Closure Canal St. Ramp Raise Parking Lot South of Topaz Gate
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LPV103
Key Design Issues: Ramp, Lakeshore Drive at Rail Street Ramp at Lake Terrace Drive Ramp, Lakeshore Drive at London Canal Sector gate at Bayou St. John
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LPV104
Key Design Issues: Ramp alternatives at Lakeshore Drive, Franklin Avenue,
and Camp Leroy Johnson Drive UNO floodwall Naval Reserve Center alignment Real estate and utilities
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Gates
Feedback needed to proceed Gate alternatives due to levee / floodwall modifications New gate(s) Relocate L4 Remove L6 Remove L9A Remove L9B Remove L9C Remove L10 Confirm design parameters