Bridges

What is a bridge? A bridge is a structure built to span physical obstacles, such as rivers, valleys, or roads, for the purpose of providing passage over the obstacle.

History History The first bridges were made by nature itself. The first bridges made by humans were probably spans of cut wooden logs and eventually stones.

World first bridges aren’t built they are grown in India. Nature's incredible engineering: some of the bridges can hold more than 50 people at a time. .

Types of bridges Beam bridge Truss bridge Suspension bridge Arch bridge Cable-stayed bridge Cantilever bridge Tied arch bridge

Beam Bridges are horizontal beams supported at each end by substructure unites. They are the simplest and most inexpensive kind of bridges.

Arch bridge The arch bridge is used for heavy weight objects. Arch bridge is one of the oldest one.

Truss Bridge is a bridge whose load-bearing structure is composed of a truss. This truss is a structure of connected elements forming triangular units.

Cantilever Bridges are built using cantilevers -horizontal beams supported on only one end. They usually use a pair of spans.

Suspension Bridges are suspended from cables. The earliest bridges were made of ropes or vines. In modern bridges, the cables hang from towers. Suspension bridges are far longer than any other kind of bridges.

Cable-Stayed Bridge is a bridge design which uses large steel cables suspended from high towers or pylons to support the bridge deckling.

The bridge of Immortals, Huanghsan, China

Bridges of Sighs in Oxford and in Venice

Bridge to Nowhere, New Zealand

The Storseisudent Bridge, Norway (The drunk bridge)

It looks as it is more a diving board than a bridge, but it is an optical illusion.

Even when you can see the whole bridge it still looks scary.

Types by use Car Traffic - Double-decked - Pipelines Pedestrian - Viaducts - Train bridge

The Banpo Fountain Bridge, South Korea It was opened in 2009. It is in the Guinness Book of World Records as the longest bridge fountain.

Millau Viaduct, France This bridge is in the Guinness Book of World Records for being the tallest bridge in the world.

Siduhe Bridge (The Si Du River Bridge) It is the highest bridge in the world (472m). It was opened in 2009.

Danyang-Kunshan Grand Bridge, China It is the world’s longest bridge. It is high-speed railway in China (164,8 kilometers long)

Langkawi Sky Bridge, Malaysia It is a pedestrian bridge (2,300 ft above sea level). It gives tourists the opportunity to view some of the most beautiful sights of the Malaysian mountains and rainforests.

Helix Bridge, Singapore It was designed to look like the structure of DNA. It was opened in 2010.

Webb Bridge, Australia It is a pedestrian/cycle bridge over the Yarra river, in Melbourne. It was opened in 2007.

The Falkirk Wheel, Scotland It was opened in 2002. This is the world’s first and only boat lift!

Henderson Waves Bridge, Singapore The bridge was opened in 2004. It is the highest pedestrian bridge in Singapore.

Khaju Bridge, Iran It was built by the Persian King, Shah Abbas II, in the 17th century.

Chengyang Bridge, China It was built in 1916 without a single nail.

Moses Bridge, Netherlands was built in the 17th century. It was made invisible to its enemies.

Tower Bridge, England In the 19th century, London Bridge was the only way of crossing the Thames river.

Quiz Question 1 Which type of bridge is the cheapest? Beam Arch Cable-stayed Suspension Question 2 What is the tallest bridge in the world? Millau Viaduct, France Langkawi Sky Bridge, Malaysia The Si Du River Bridge

Identify these bridge types Suspension bridges Arch bridges Beam bridges Cable-stayed bridges

Suspension bridges Arch bridges Beam bridges Cable-stayed bridges

Suspension bridges Arch bridges Beam bridges Truss bridges

Suspension bridges Arch bridges Beam bridges Cable-stayed bridges

Suspension bridge Arch bridge Beam bridge Cable-stayed bridge

Thanks for your attention! Somebody said: A smile is the bridge that put together two souls