A bridge It is a work that allows pass over a moat, a river or another place . It is a structure what rises above the surface to facilitate the displacements, causing that the people or the vehicles can overcome some obstacle.
According to its characteristics, it is possible to differentiate between several kinds of bridges. A suspension bridge , in this framework, is the one that is supported by chains or cables .
The experts in structural engineering They are in charge of projecting the bridges. In the case of suspension bridges, your platform (the sector that supports the load) is suspended, which works mainly to traction .
The first suspension bridges were created in mountain areas centuries ago. With the advancement of knowledge, suspension bridges began to be installed that can support not only the passage of Humans or animals but also of cars and even of trains .
The simplest suspension bridges have no vertical braces. Anyway, there are many suspension bridges with vertical braces that the cables of suspension , fixed in turn to the ends of the structure.
Among the advantages offered by suspension bridges over other types of bridges, there are its flexibility, the possibility of placing the platform at a great height, the scarce material needed to develop them and the construction without central support. As negative aspects, they demand an important foundation in weak soils and can be impassable before winds very intense
One of the most famous suspension bridges in the world is the Golden gate bridge , located in U.S . This suspension bridge links the south of the Marin County with the north of the San Francisco Peninsula .