presentation to orleans levee district lake pontchartrain and vicinity levees lpv101 - 104 20...

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.


Overall map


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


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


Map of LPV101



Location: Floodwall @ Lakeshore Drive to Orleans Avenue Canal

Levee: 6,500 feet Floodwall: None Ramps and gate structures: 1 ramp, 1 gate


Map of LPV 102



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


Map of LPV103



Location: London Avenue Canal to IHNC Levee: 9,400 feet Floodwall: 3,400 feet Ramps and gate structures: 4 ramps, 5

gates


Map of LPV104 - West


Map of LPV104 - East


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


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


Construction Schedule


Quality Control andQuality Assurance Processes

Independent Technical Review (ITR)

Value Engineering (VE)

Biddability, Constructability, Operability and Environmental (BCOE) Review


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


LPV102

Key Design Issues: Topaz St. Gate Closure Canal St. Ramp Raise Parking Lot South of Topaz Gate


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


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


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

presentation to orleans levee district lake pontchartrain and vicinity levees lpv101 - 104 20...

Documents

ramp slide

john slide

gate sector gate

london canal slide

map of lpv101 slide

west slide

east slide

map of lpv103 slide