Steel bridges can be installed within cities, along intercity routes, over rivers, on railway lines, and more. The application and installation location of a steel bridge structure play a critical role in its design.
Steel bridges play a vital role in both road and rail transportation, making them one of the most widely used types of steel structures. Various types of steel bridges are constructed, each designed for specific applications.
Like many other steel structures, steel bridges became popular following the development of the steel industry in the mid-19th century. It is worth noting that the earliest steel bridges were originally made of iron. As advancements in metallurgy progressed, the use of steel became more common due to its superior properties. The Clark Bridge in the United Kingdom and the Brooklyn Bridge in the United States are considered among the earliest examples of modern steel bridge structures.
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Steel bridges are among the types of structures whose quality must be carefully assessed. Ensuring compliance with standards throughout all stages of construction and installation is critical, as even the slightest error or defect at any stage can lead to irreversible damage. One of the most important phases after the installation of a steel bridge is conducting tests and inspections to confirm the bridge’s load-bearing capacity. A properly designed steel bridge must be able to support the required load without any issues.
Regular inspections help ensure the integrity of bridge components. If any defect or damage is detected, the use of the bridge must be immediately halted, and the affected part must be repaired or replaced. Failure to do so significantly increases the risk of serious accidents. Environmental events and climate changes،such as strong winds, storms, or earthquakesفcan also cause damage to the steel bridge structure. Therefore, environmental factors and conditions should be carefully considered and accounted for during the design, construction, and installation phases of the bridge.
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This type of bridge consists of horizontal steel girders that rest on piers or abutments. Plate girder bridges are generally suitable for short to medium spans and are widely used due to their simple design and ease of construction.
Examples include:
Trent Bridge and Mark Bridge in England, and Tory Bridge in Scotland.
Steel truss bridges are composed of interconnected metal members arranged in triangular formations, creating a strong and durable structure. These bridges offer greater load-bearing capacity compared to plate girder steel bridges. They are suitable for medium to long spans and feature more complex designs than plate girder bridges.
Examples include:
Forth Bridge in Scotland, UK, and Eads Bridge (formerly known as St. Louis Arch Bridge) in St. Louis, USA.
Arch bridges are made up of one or more steel arches that evenly transfer loads to the abutments. Due to their elegant design and ability to withstand heavy loads, they are often used in the construction of large and iconic steel bridge structures.
Example:
Sydney Harbour Bridge in Sydney, Australia.
Cable-stayed bridges consist of one or more vertical towers and tensioned cables that connect the towers to the bridge deck. These types of bridges are ideal for very long spans and are often used in large-scale and iconic projects due to their modern design and visual appeal.
Examples:
Millau Viaduct in France and Erasmus Bridge in Rotterdam, the Netherlands.
Suspension bridges consist of one or more main cables and a series of secondary cables that transfer the loads from the bridge deck to the main towers. These bridges are also suitable for extremely long spans and are used in large-scale and specialized steel bridge projects.
Examples:
Brooklyn Bridge in New York, USA
Golden Gate Bridge in San Francisco, USA
Tsing Ma Bridge in Hong Kong
Mammut Structures is a leading and specialized manufacturer of a wide range of sandwich panels, modular containers, steel structures, and prefabricated buildings. Leveraging cutting-edge technologies and a team of highly skilled professionals, we ensure excellence and innovation in every project. Partnering with us establishes a foundation for sustained and mutual success.
