The foundations were based on a sunken concrete caisson that was built above ground then sunk over a period of time.

The sides of the site are braced with 425 concrete caissons sunk as much as 100 feet into the ground.

The drills created a hole in the soil and the rock below for the concrete caissons that support the added weight of the structure.

Next came 145 huge concrete caissons in various sizes which were to be sunk butt to butt to make an inner breakwater.

The structural system is of a regular bay steel frame construction, resting on a series of concrete caissons.

At present, more than 80% cost of the wave energy plant is due to civil construction (concrete caissons).

In 1964 a modern remote controlled concrete caisson lighthouse replaced the ships and it stands to this day.

The bridge rests on 11 huge, hollow, concrete caissons sunk into the river bed.

It is notable for being built on floating concrete caissons.

A unique aspect about the design of the bridge is that the main span is supported by eight hollow concrete caissons.