Sea Walls
Structures called seawalls are built parallel to shore, often to protect beachfront properties from powerful storm waves. Seawalls reflect the energy of such waves back towards the beach, where they worsen beach erosion. Eventually,seawalls are undercut and have to be rebuilt larger and stronger than before.
Breakwater
Structures that are built to provide anchorages for small boats or a calm beach area are called breakwaters. Breakwaters are built parallel to the shoreline. When the current slows down behind a breakwater and is no longer able to move sediment, it deposits sediment behind the breakwater. If the accumulating sediment is left alone, it can eventually fill an anchorage. To prevent this, anchorages have to be dredged regularly
In the 1980s, sea walls and breakwaters were built to calm the beach area on Louisiana Highway 82, along Hollly Beach.