Seawall Repair in Key Biscayne.

Key Biscayne seawall context.

Key Biscayne is a barrier island, which means seawalls here face two completely different exposures depending on which side of the property faces the water. Bayside frontage (Biscayne Bay) sees moderate wave action, king-tide overtopping, and the same chloride corrosion as the rest of Miami-Dade. Atlantic Ocean frontage sees direct hurricane exposure, persistent wave loading, and storm surge. We design for the actual exposure of each property, not a generic "Miami waterfront" spec.

Key Biscayne has been crossed or brushed by several hurricanes since 2000, including Hurricane Irma in 2017 which produced storm surge that overtopped many existing seawalls. NOAA records show 12 named storms in the average Atlantic season, and the island's exposed position means it sees more named-storm impact than mainland Miami-Dade. Hurricane-rated design is not optional here.

Key Biscayne neighborhoods we serve.

The full Crandon Boulevard corridor, Mashta Island, Sunrise Drive and Sunrise Bay, Buttonwood Drive, Harbor Drive, Ocean Lane Drive, Cape Florida State Park boundary properties. Both gated community frontage and open-bay residential walls.

Common Key Biscayne seawall projects.

• Seawall replacement with concrete or hardened composite panels for ocean-side properties.
• Post-hurricane damage repair after named-storm events.
• Riprap toe protection for walls with persistent scour.
• Helical anchoring on walls with original tieback failure.
• Cap replacement on aging mid-island canal walls.
• Pre-storm and post-storm inspection as routine maintenance.

Why Key Biscayne seawalls need specialized design.

Open-water wave loading on Atlantic frontage can easily exceed 4 to 6 times the design load assumed on a typical inland canal wall. Storm surge from a Cat 1 hurricane can produce 6 to 10 ft NAVD water levels at Key Biscayne. Concrete panel seawalls with engineered tieback spacing and adequate cap embedment are the standard answer; vinyl is generally inadequate for the most exposed frontage. Toe protection with riprap or armor stone is routine.

Free inspection in Key Biscayne.

Inspection typically within 3 to 5 business days. Faster after named storms when our response capacity is dedicated to barrier island work. Written report in 48 hours, photos and measurements included.