Originally authorized in 1996, Congress appropriated federal funds to develop solutions to the flooding problems in Orleans, Jefferson and St. Tammany parishes in the aftermath of Hurricane Katrina in 2005. The United States Army Corps of Engineers (USACE) started working on these flood protection projects to protect against a ten-year rainfall event and reduce damages for larger events.

Conti Federal constructed SELA-07b consisting of three 84-inch cement lined steel pipes connecting the discharge pipes from a pump station to a levee crossing and outlet structure for discharge into the Mississippi River. Work included construction and modification of existing utilities, construction of two pump stations including concrete foundations and fiberglass wet wells, pile driving, installation of waterline, mass excavation and hauling, asphalt and concrete paving, dewatering, construction of temporary retaining structures, stone and bedding construction, structural excavation, backfill and demolition.

Conti Federal laid as much as 600 linear feet of pipe per month and coordinated with USACE, the Louisiana Department of Transportation and Development, the local utility company and Jefferson Parish to redesign the traffic configuration, temporary retaining structure (TRS) and dewatering system to improve efficiency.

Key features of the project included:

  • Constructed two pump stations
  • Installed 13,500 linear feet of 84-inch steel charge pipe, 4500 linear feet TRS, 12 catch basins, and 1500 linear feet of storm drain pipe
  • Installed 1500 tons of asphalt and 250 cubic yards of concrete
  • Drove 2375 linear feet of steel H-piling
  • Installed 17,750 linear feet of silt fence
  • Excavated and disposed of 138,000 cubic yards of soil
  • Installed 4,000 linear feet of 12-inch waterline