Seawall Repair in Seabrook Island, SC

Seabrook's oceanfront wall has a 50-year history. A 2023 engineering inspection for the property owners' association says shore protection started in the early 1970s around the Beach Club and Renken Point. Between 1975 and 1978, vertical concrete sheet pile walls and riprap went in along more than 2,000 feet of shoreline. Hurricane David collapsed parts of the wall at Renken Point in 1979. Since then, inlet relocations in 1983 and 1996 and a 1990 nourishment have buried parts of the wall under sand and dune, while the 2023 inspection still found sections that need attention.

How Does Seabrook Island Connect to Our Charleston Team?

Our Charleston seawall repair team handles Seabrook projects, including state coordination. Seabrook sits beside Kiawah Island across Captain Sams Inlet. Across the North Edisto, Edisto Beach has its own grandfathered groins and revetments. Back toward the harbor, Folly Beach is the one town with a special exemption to rebuild damaged walls.

What Can Be Done to Seabrook's Oceanfront Wall?

The 2023 inspection rated sections from poor-to-fair to good. It recommended more armor stone in some areas and noted that other sections are now buried. Before anyone acts on that, the state's beachfront rules apply:

• Grandfathered structures may be maintained in their present condition but not enlarged, strengthened, or rebuilt, under SCDES guidance.
• Heavily damaged sections. By statute, an erosion control structure destroyed more than 50% above grade may not be repaired and must be removed. Damage is measured by the length destroyed compared with the original length.
• Materials. Allowed repairs must use materials similar to the original.

We can document the condition of a section and help your association understand the options. The final call on what counts as maintenance belongs to SCDES. For rock work that is allowed, see our revetment maintenance service.

Why Do Bohicket Creek Bulkheads Fail?

A six-foot tide. NOAA's Bohicket Creek station records a mean range of 5.93 feet, higher than the 5.22 feet at the Charleston Harbor gauge. That much water moving against a wall pulls soil through any gap.

Shifting channels. The inspection report describes the North Edisto Inlet's northern channel moving shoreward and threatening the wall near Beach Court before a 1990 realignment. Moving channels change the current along banks and walls.

Pluff mud. Seabrook's marsh is soft, fine sediment mixed with decaying cordgrass, which gives a wall's toe little support.

Which Repairs Fit Seabrook's Creek-Side Walls?

When a creek wall still stands straight and the ground behind it is settling, polyurethane injection fills the voids and seals seams from behind through small holes. Open seams, damaged caps, and rotted boards call for bulkhead repair from our Charleston team. A creek wall that has started to lean can be anchored with Charleston-area seawall reinforcement.

Who Approves Wall Work on Seabrook Island?

• SCDES Bureau of Coastal Management. It took over DHEC's coastal program in July 2024. The beach and dune system and the creeks and marsh are critical areas. Normal maintenance and repair may not need a critical area permit.
• Town of Seabrook Island. The town adopted an updated comprehensive beachfront management plan in 2024.
• Your association. Check its review rules as well.

Request a free inspection and we'll walk through what your section of wall allows.