BridgeA bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or railway) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually something that is otherwise difficult or impossible to cross. There are many different designs of bridges, each serving a particular purpose and applicable to different situations.
Prestressed concretePrestressed concrete is a form of concrete used in construction. It is substantially "prestressed" (compressed) during production, in a manner that strengthens it against tensile forces which will exist when in service. This compression is produced by the tensioning of high-strength "tendons" located within or adjacent to the concrete and is done to improve the performance of the concrete in service. Tendons may consist of single wires, multi-wire strands or threaded bars that are most commonly made from high-tensile steels, carbon fiber or aramid fiber.
Dorothy BridgesDorothy Louise Bridges (née Simpson; September 19, 1915– February 16, 2009) was an American actress and poet. Bridges was the matriarch of an acting family, which included her husband, Lloyd Bridges, two of their three sons, Beau Bridges and Jeff Bridges, and her grandson, Jordan Bridges. Bridges was sometimes credited as Dorothy Dean. Bridges was born Dorothy Louise Simpson in Worcester, Massachusetts. Her father was an immigrant from the United Kingdom, born and raised in Liverpool, England.
