Coastal Services

FDAE has expertise in providing geotechnical, planning and permitting services for coastal protection and restoration projects, upland disposal sites and beneficial use of dredged material projects along the Gulf Coast. Our team members are well known for working with various federal, state and local agencies in making our coast more resilient. As with any project, it is critical for the design to take construction means and methods and practical constraints into consideration to provide for a viable, economical and efficient design. FDAE’s planning and design aims to accomplish that on every project. However, this can be a difficult task as it entails many factors including but not limited to:

  • Understanding the requirements and incorporating project specific construction means and methods
  • Getting all parties onboard with innovative ideas that sometimes question the status quo
  • Contract limitations
  • Contractor and owner limitations
  • Land rights
  • Varying subsurface conditions
  • Regional geologic faults, subsidence and sea level rise
  • Spatial variation in performance of constructed marsh or shoreline features
  • Lift sequencing and drainage considerations
  • Estimating cut-to-fill ratio
  • Strength gain in soft soil
  • Deep channel plugs (sheet piles, hay bales, sand and other options)
  • Various construction considerations, etc.

FDAE works closely with the design team to understand the limitations and to provide geotechnical designs that are helpful to the owners and the dredgers to plan and construct coastal projects. Our services include, but are not limited to:

  • Preparing LPDES and Coastal Use Permits
  • Desktop study and research for planning coastal protection and restoration projects, upland disposal sites and beneficial use of dredge material projects
  • Site exploration and field testing of soft soil on land, in marshes and open water sites
  • Obtaining, packaging and transporting high-quality soil samples
  • Standard and specialized geotechnical laboratory testing (including low-stress consolidation and column settling tests)
  • Containment dike and levee stability analyses (slope stability, settlement and bearing capacity)
  • Hydraulically dredged and placed marsh fill analyses
  • Borrow area soil analyses to estimate dredgeability of soil and clay-ball formation 
  • Ground improvements and strength gain
  • Instrumentation and monitoring of dredged and placed hydraulic fill (ISPs and other instrumentation)
  • During and post-construction analyses of marsh fill settlement based on instrumentation and monitoring of fill material
  • Preparing geotechnical and monitoring reports as required by the agencies/owners.

FDAE develops innovative methods and revives/updates previous methods that have been used for upland disposal sites (UDS) and applies these lessons to marsh restoration projects. It is crucial to understand the various inputs into programs like Primary Consolidation, Secondary Compression, and Desiccation of Dredged Fill (PSDDF) that have been developed for UDS.

Our team understands the local challenges and the importance of adapting to changing conditions during design and construction. Please feel free to contact us to talk about your next project or to simply discuss various ideas and options.  We look forward to hearing from you.

The following is a partial project list in which FDAE’s Vice President, Mr. Venu Tammineni, P.E., has provided geotechnical and/or monitoring services:

  • State of Louisiana, CPRA, Cole’s Bayou Marsh Restoration (TV-63); Vermilion Parish, LA
  • Mitigation Plan for Port Arthur Liquefaction Project, Jefferson County, TX
  • State of Louisiana, CPRA, Bayou La Loutre Ridge Restoration and Marsh Creation (PO-178); St. Bernard Parish, LA
  • *State of Louisiana, CPRA, Oyster Bayou Marsh Restoration (CS-59); Cameron, LA
  • *State of Louisiana, CPRA, New Orleans Landbridge Shoreline Stabilization & Marsh Creation (PO-169); New Orleans, LA
  • *State of Louisiana, CPRA, Bayou Bonfouca Marsh Creation (PO-104); St. Tammany Parish, LA
  • *State of Louisiana, CPRA, Grand Liard Marsh and Ridge Restoration (BA-58); Plaquemines Parish, LA
  • *State of Louisiana, CPRA, Mid-Barataria Diversion (BA-153); Plaquemines Parish, LA
  • *State of Louisiana, CPRA, Lost Lake Marsh Creation and Hydrologic Restoration Project (TE-72); Terrebonne Parish, LA
  • *State of Louisiana, CPRA, Lake Pontchartrain Shoreline Protection; Tangipahoa Parish, LA
  • *State of Louisiana, CPRA, Cameron Meadows Marsh Creation and Terracing (CS-66); Cameron Parish, LA
  • *State of Louisiana, CPRA, Bayou Dupont Sediment Delivery and Marsh Creation (BA-164); Jefferson and Plaquemines Parish, LA
  • *NRCS, Lake Lery Shoreline Restoration and Marsh Creation (BS-16); Plaquemines Parish, LA
  • *NRCS, Alligator Bend Shoreline Protection (PO-34); Orleans Parish, LA
  • *NRCS, Terracing and Marsh Creation South of Big Mar (BS-24); Plaquemines Parish, LA
  • *Vermilion Parish/Oyster Reef Parallel to Coastline at Cheniere Au Tigre and Shoreline Protection; Vermilion Parish, LA

*Experience with previous employer


Disadvantaged Business Enterprise (DBE) Certified

Small Business (Hudson Initiative) Certified

Small and Emerging Business Development (SEBD) Program Certified

LELAP Accredited Lab

AASHTO Accredited Lab

Licensed to practice engineering in Louisiana, Texas, Mississippi, and Arkansas

Contact us

10995 Coursey Blvd., Baton Rouge, LA 70816