Seawall Repair in Key West.

An island about eight feet above the water, with walls on every side.

Key West is a coral cay roughly four miles long and a mile wide, and its seawalls are the front line.

The island sits where the Atlantic meets the Gulf of Mexico, with an average elevation of only about eight feet. A seawall here is more than a boundary: it is what separates a street, a foundation, or a yard from tidal water. When Hurricane Wilma pushed surge across the island in 2005, an estimated sixty percent of the homes in Key West flooded, which is a useful reminder of how little margin the lower parts of town have.

Walls on the island range from older masonry and coral rock structures to concrete and sheet pile. Many have been raised, patched, or backed with newer material over the years. Before recommending anything, we identify what each wall is made of and how it is supported.

Key West is incorporated, so building permits run through the City rather than the unincorporated county, and a large part of the island lies within the Old Town historic district. The City's Historic Architectural Review Commission reviews exterior work in the district, and the City now allows a Certificate of Appropriateness and a building permit to be filed on one combined application. Whether a particular wall falls under HARC review depends on the address, so we confirm it at the start.

The Keys carry a state critical-concern designation as well, and shoreline work can involve state and federal agencies. Souffront engineers the repair and manages the permitting. If a wall cannot be saved, we scope its replacement through seawall construction.

What a Key West seawall repair covers.

The engineer settles the design before any line is priced, and the proposal that follows is fixed-fee.

• Engineer's assessment of the wall, the cap, and the ground behind
• Identification of wall type: masonry, rock, concrete, or sheet pile
• Sealed design and permit drawings for the repair
• Historic district review coordination where it applies
• Cap repair or rebuild, detailed against salt and humidity
• Panel, joint, and masonry stabilization
• Tieback and anchor replacement or addition
• Grouting of voids where backfill has washed out
• Permit submittals to the City and environmental agencies
• Water-based access planning for tight island sites

Designing for the next surge, not the last one.

On a low island, a repair is judged by how it performs in a storm.

Surge and wave action push on a wall with far more force than an ordinary tide. Open joints or a plugged outlet can let one storm strip the fill from behind a face that seemed fine the week before. So the design traces the route water takes into the backfill and the route it takes back out, because that is where storm damage tends to begin.

Where the owner and the City want the cap higher to account for rising water, the engineer sets the elevation and checks that the wall can carry the added load.

Salt, humidity, and constant wetting speed up the corrosion of steel in concrete caps and panels. We repair affected areas back to sound material. Our seawall repair page explains the method, and a seawall inspection is the right first step if you do not yet know how far the damage goes.

Serving Key West and the Lower Keys.

Old Town properties, Stock Island, marinas, and waterfront associations. Working up the chain, see seawall repair in Marathon and seawall repair in Islamorada, and the matching seawall inspection in Key West page.