Bridge in Nepal A bridge is a structure that is built over a railway, river, or road so that people or vehicles can cross from one side to the other. A bridge is a structure built to span a physical obstacle 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. A bridge often provides a quicker, easier way to travel from one place to another place. A bridge is a structure to cross an open space or gap. Bridges are mostly useful for crossing rivers, valleys, or roads by vehicles but people have also used bridges for a long time for walking. Bridges are structures built over railroad tracks, roads, rivers or some other obstacle. This is clearly a good thing if it means people get better access to education and employment. The main components of a bridge are the foundation, substructure, and the superstructure. Each of these core areas have other parts within them. Piles and pile caps are constructed as the foundation of the bridge. The oldest known bridge is the Kazarma Bridge or Arkadiko Bridge, which is located in Argolida, Peloponnese, Greece, and was built circa 1300 BC during the Mycenaean period. Design error structural and design deficiencies Corrosion Construction and supervision mistake lack of maintenance or inspection accidental overload and impact Uses of Poor material Poor detailing for RCC bridge Poor connection between the structural elements like fitting of bolts or welding in steel bridge Natural disaster like: Earthquake Flood Landslide Increase Wind velocity Types of bridge in Nepal Beam Bridge. Truss Bridge. Suspension Bridge. Arch Bridge. A beam bridge consists of a horizontal beam that is supported at each end by piers. The piers are directly pushed down by the weight of the beam. Beam bridges are frequently used for passing large vehicles and trains, while some of them are also made to be walked on by people. One of the significant drawbacks of beam bridges is the sagging issue. As there is no weight transfer on bridges made entirely of concrete, beam bridges are subject to drooping, which means gravity places a compressive force on the beam. Girder plate girder box girder bridges A truss bridge is a bridge whose load-bearing superstructure is made up of a truss, which is a structure of joined parts that often forms triangle units. In reaction to dynamic loads, the coupled elements may experience tension, compression, or occasionally both types of stress. Due to their great strength to weight ratio, truss bridges are very efficient. The strongest truss bridge that consumes the least amount of material has been tested in this experiment. The Pratt and Howe design is utilized on two of the most popular truss bridges. Even though the truss bridge design has been around for literally centuries it is widely regarded as the strongest type of bridge. The triangular prism is the strongest style of truss bridge. This is as a result of its capacity to counterbalance the forces of compression and tension. This shape is used in Truss and Cantilever Bridges. Superstructure is the main component of a bridge. The load is supported by the superstructure as it crosses the bridge. It consists of the slab of the deck, girders, trusses, etc. A suspension bridge is a form of bridge in which the deck is suspended via vertical suspenders from below suspension cables. These loads are transferred both to the towers, which carry them by vertical compression to the ground, and to the anchorages, which must resist the inward and sometimes vertical pull of the cables. A suspension bridge is intended to connect communities by carrying both rail and road traffic, frequently across significant distances in a single span. Due to their distinctive appearance, arch bridges are second in popularity to suspension and cable-stayed bridges for long-span bridges. Depending on the geometry of the arches and the quantity of hinges, different arches have different structural characteristics. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side. The name has been given in both Nepali and English to the Kali Gandaki River's longest suspension bridge in the world, which connects Baglung district with neighboring Parbat district. The 567-meter Kali Gandaki River bridge is known in English as the "Gandaki Golden Bridge'' and in Nepali as the "Gandaki Sunaulo Jhula." The first "government" bridge was constructed in 1907 near Khurkot, east of Kathmandu, crossing the Sunkosi River between the districts of Sindhuli and Ramechhap. (This bridge was destroyed by the flood of 1985.)Causes of bridges failure in Nepal :
Beam bridge in Nepal
Types of beam bridge in Nepal
Truss bridge in Nepal Suspension bridge in Nepal
Arch bridge in Nepal
Longest suspension bridge in Nepal
First bridge in Nepal:
Top 10 Highest bridge in Nepal:
Nepal's main highway bridges:
Arc bridge in Nepal: