SoCal Seawall

Seawall Reinforcement

Helical Anchor Design

We provide engineering services for reinforcing existing seawalls with helical anchors, walers, anchor testing, shoreline stabilization, and coastal permitting support for waterfront properties throughout Southern California.

Request a Consultation Seawall Design Services

Helical Anchor Reinforcement for Existing Seawalls

Existing seawalls may experience movement, rotation, cracking, corrosion, tieback deterioration, increased lateral earth pressure, scour, erosion, or higher loading demands from waterfront improvements. In many cases, reinforcing an existing seawall with helical anchors can improve stability without full seawall replacement.

Helical anchors are steel deep foundation elements installed into the soil using hydraulic torque equipment. When properly designed and connected to a seawall through plates and walers, they can provide tensile resistance and lateral restraint to help stabilize the wall.

Helical anchor performance test for reinforcing existing seawall

Engineering Applications

When Helical Anchors May Be Used

Seawall Stabilization

Helical anchors may help reduce excessive movement, improve lateral resistance, and provide additional restraint for existing seawalls or bulkheads showing signs of distress.

Tieback Replacement or Upgrade

Older tieback systems may deteriorate over time due to corrosion, marine exposure, or increased loading. New helical anchors can be designed as supplemental or replacement tieback systems.

Limited Access Sites

Helical anchors are often useful where excavation access is limited, construction staging is difficult, or minimizing disturbance to existing waterfront improvements is important.

Design and Testing Considerations

Helical anchor seawall reinforcement requires evaluation of the existing seawall, soil conditions, corrosion exposure, marine environment, anchor capacity, anchor spacing, connection detailing, installation torque, and long-term service life. Load testing or performance testing may be recommended to verify anchor capacity and installation assumptions.

  • Existing seawall condition and geometry
  • Geotechnical conditions and anchor embedment
  • Anchor capacity and spacing
  • Waler, plate, and connection design
  • Corrosion protection and marine durability
  • Installation access and construction sequencing

Coastal Commission & Permitting Support

Seawall reinforcement projects may require local agency review, harbor coordination, environmental review, and California Coastal Commission considerations. We provide engineering narratives, structural design criteria, anchor testing documentation, repair concepts, and technical support for waterfront permitting submittals.

Our services support seawall reinforcement projects in Newport Beach, Huntington Harbour, Long Beach, Dana Point, Laguna Beach, Malibu, Santa Barbara, San Diego, Coronado, and coastal Southern California.

Discuss Your SeawallBulkhead Condition Assessment