There are numerous types of bridges, including arch bridges, beam bridges, truss bridges, cantilever bridges and suspension bridges. There are a few other types of bridges as well, but they typically can be listed under the above categories as they are adaptations of these main types.Continue Reading
Arch bridges utilize archways or arches as the main structural component. In most cases, the usable part of the bridge -- the part containing the pathway or roadway -- is placed upon a series of arches.
Perhaps the most basic of all bridges, beam bridges are supported by several beams, which can vary in shape and size. Truss bridges are built using diagonal posts. There are two main types of truss bridges, including the king post design and the queen post design.
Although they resemble arch bridges, cantilever bridges are supported by diagonal braces or trusses rather than the vertical braces used in arch bridges. Suspension bridges are suspended using a series of heavy, thick cables which are connected to columns. Cables are attached using a harp design, which resembles the strings of a harp, or a fan design in which all cables connect at one point. A famous example of a fan design is the San Francisco Bridge.Learn more about Architecture
Lake Pontchartrain Causeway is one of the most famous beam bridges in the world. It is the longest continuous over-water bridge on Earth. "The Causeway," as it is often referred to, is 23.83 miles in length.Full Answer >
For medium distances of between 500 and 2,500 feet, cable-stayed bridges have the advantages over suspension bridges of requiring less steel cable and being less expensive and quicker to build. In addition, instead of being limited to two towers as suspension bridges are, cable-stayed bridges can be built with any number of towers.Full Answer >
There are three basic different types of scaffolding: supported scaffolds, suspension scaffolds and manlifts or personnel hoists. Supported scaffolds are one or more platforms held up by items like poles and frames. Suspended scaffolds are platforms held by rope or some other overhead support.Full Answer >
Disadvantages of cantilever bridge construction include special gantries needed to support the weight of the bridge, complicated bridge maintenance over many years and that the geometry of the bridge's design depends on stage construction and timeframes of building the structure. Construction requires massive, heavy forms, which increases costs over the entirety of the project.Full Answer >