Abstract: A bridge pier structure is disclosed having a downwardly open footing chamber, an upper buoyant chamber, an upright member that mechanically connects these chambers, and that defines a fluid channel to the footing chamber. A valve is disposed in an upper portion of the fluid channel and configured to attach to a water ejection pump and a vacuum source. The pressure in the footing chamber can be reduced, such that hydrostatic pressure and the atmospheric pressure aids in embedding the footing. Optionally, a vibrating apparatus attaches to the structure to facilitate embedding. The apparatus may also enable the structure to be dislodged after installation, by providing a high pressure air source to the valve. The structure may be installed by towing it to location, positioning it on the waterway bed, and applying a suction to the valve.

Abstract: A bridge and pier structure are disclosed for extending over a waterway, wherein the pier structure includes a chamber filled with air or other buoyant material such that a buoyancy force is produced. The chamber is sized and filled such that the buoyancy force offsets at least eighty or ninety percent of the weight of the bridge that is supported by the pier. The pier structure includes a footing portion that is embedded into the bed of the waterway, and an optional piling extends downwardly from the footing to engage more stable strata. In an embodiment of the invention, the pier includes a relatively large upper portion that defines the buoyant chambers, and a relatively narrow portion that extends down to the footing portion of the pier. In an embodiment, a bumper assembly is disposed about the pier, to protect the pier and provide a platform for other activities.

Abstract: A bridge and pier structure are disclosed for extending over a waterway, wherein the pier structure includes a chamber filled with air or other buoyant material such that a buoyancy force is produced. The chamber is sized and filled such that the buoyancy force offsets at least eighty or ninety percent of the weight of the bridge that is supported by the pier. The pier structure includes a footing portion that is embedded into the bed of the waterway, and an optional piling extends downwardly from the footing to engage more stable strata. In an embodiment of the invention, the pier includes a relatively large upper portion that defines the buoyant chambers, and a relatively narrow portion that extends down to the footing portion of the pier. In an embodiment, a bumper assembly is disposed about the pier, to protect the pier and provide a platform for other activities.