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Rama's (Adam's) Bridge
Adam's bridge was believed to be built around 5000 B.C ., It was known as the connecting bridge between India and Sri Lanka. This bridge was built of limestone shoals. This mythical bridge was believed to have supported hundereds of people travelling from India to Sri Lanka at the time. NASA has recently found satellite images of the underwater coral bridge, but is currently underwater.
http://theconstructor.org/structures/history-of-bridges/5491/ -
The very first iron bridge
In 1779, the very first iron bridge was designed and built by Abraham Darby III in Coalbrookedale, Telford. This type of bridge is used to cross rivers. It is called the iron bridge because it is only made of iron and steel, and is only used for short distances. This was also the first large piece of architecture to be made of iron. This was the building base for more modernized bridges. http://www.technologystudent.com/struct1/stlbrid1.htm -
The first truss bridge
The first truss bridge was built in the early 1870s. A truss bridge is a bridge mainly composed of triangular units, which is also known as a truss. Truss bridges are the first of modern bridges. The structure of a truss bridge is a lightweight attachment where the diagonals are attached to the opposite corner, forming a rectangle. The material used to build these types of bridges are usually iron rods and compression tools, because wood and timber were rare back in the day.
https://en.wikipedia -
Lake Ponchartrain Causeway
Lake Ponchartrain Causeway is the longest bridge in the world. It is located in southern Lousiana, and has parallel running bridges. The longer bridge measures 23.83 miles. It was opened in 2011.It is famous because it is being carried by 9,500 concrete pilings.
http://www.livescience.com/34448-worlds-longest-bridge.html -
The Jacob's Creek Bridge
The Jacob's Creek Bridge was the very first suspension bridge built in the United States. It was built in 1801 in Westmoreland County, Pennsylvania. The designer of the bridge was James Finley, who combined all of the modern ideas of a bridge in his first suspension bridges. The structure of the bridge is hanging below the holders, which supports the weight of anything on the bridge. Suspension bridges are known to be located in mountainous areas.
https://en.wikipedia.org/wiki/Jacob%27s_Creek_Br
