Arch Bridges : Arch Bridge is one of the most popular types of bridges, which can today be found all across the world. Here you can follow their path through history, from their first inception some 3000 years ago in Greece, to their renaissance in Ancient Rome, all up to modern times. Truss bridges : One of the first modern bridges to be made were truss bridges. They could be made of wood which some places had plethora and could withstand larger weights. They were later made of iron and steel. Many of those old modern bridges still stand. Beam bridges : Beam bridge is the oldest and the simplest type of the bridge. It appeared when the first tree fell over the stream and a human crossed it. Today we still make bridges that use similar principle Shayingou Bridge Guanling, Guizhou, China 328 feet high / 100 meters high 394 foot span / 120 meter span Beam bridge: http://www.highestbridges.com/wiki/index.php?title=Kunming_Highway_Beam_Bridge : Truss bridge Savage Mill Trail Crosses Little Patuxent River Locale Savage, Maryland [1] Designer Wendel Bollman [1] Design Bollman Truss [1] Material Cast and wrought Iron [1] Total length 160 feet (48.8 m) [1] Longest span 2 × 80 feet (24.4 m) [1] Number of spans 2[1] Piers in water 1 Construction end 1869 http://en.wikipedia.org/wiki/Bollman_Truss_Railroad_Bridge Arch bridge Hell Gate Bridge Address: New York, NY , Construction started: March 1, 191 , Total length: 17,000' (5,182), Height: 305' (93 m) Location: Wards Island, Queens Bridge type: Arch bridge, Through arch bridge Architects: Gustav Lindenthal, Henry Hornbostel Facts Truss bridge are one of the oldest types of large bridges in the United States. The first truss bridges were built around the 1820s. These were made of wood in many cases, and were used to transport heavy carts. Read more : http://www.ehow.com/about_4741423_truss-bridges.html arch bridge is a bridge with abutments at each end shaped as a curved arch. 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. https://www.google.com/?gws_rd=ssl#q=facts+about+arch+bridges Beam bridge: A beam or "girder" bridge is the simplest kind of bridge. In the past they may have taken the form of a log across a stream but today they are more familiar to us large box steel girder bridges. There are lots of differ types of beam http://www.design-technology.org/beambridges.htmnt here are some bridges that collase Tay Bridge Collapses, Alas 1879: An iron railway bridge over Scotland’s River Tay collapses in a severe storm as a passenger train rolls across. The train plunges into river, killing everyone on board http://www.wired.com/2009/12/1228tay-bridge-collapse/ The story of an overpass collapsing in Istanbul A footbridge has collapsed in Istanbul, killing one and injuring four. It was actually so poorly built that it didn’t need to be hit by a truck to collapse: A strong wind or a group of children running on it would have been enough http://www.hurriyetdailynews.com/the-story-of-an-overpass-collapsing-in-istanbul.aspx?pageID=238&nid=71333 Tacoma bridge Collapsed The following text detail the story of the Tacoma Narrows Bridge from the inception to the reopening of a reconstructed bridge in 1950. Links to further pages on the Construction, Opening, Collapse, Aftermath, and Reconstruction are available at the bottom of the page. Text sources are listed in the bibliography at the end of the Reconstruction section. Image sources are described in the captions accompanying the images. The images are the exclusive right of the cited institutions (the University of Washington Libraries, Special Collections and the Museum of History and Industry), please contact them for reproduction permission. Part that made collapsed : The violent collapse broke many suspender cables. Some were lost, some severely damaged, and some undamaged. Their only value now was as scrap metal. Also the Deck-Floor Systemhttp://www.lib.washington.edu/specialcollections/collections/exhibits/tnb