Hannigan

//Izzy Hannigan // > // > // > // media type="googlemap" key="http://maps.google.com/maps?source=s_q&hl=en&q=Donghai+Bridge&sll=30.687526,122.010727&sspn=0.371417,0.727158&ie=UTF8&split=1&filter=0&rq=1&ev=zi&radius=21.61&hq=Donghai+Bridge&hnear=&ll=30.687526,122.010727&spn=0.371417,0.727158&output=embed" width="425" height="350" align="left"
 * 1) //**What is the name of the bridge?** I researched the Donghai Bridge. //
 * 2) //**When and where was the bridge built?** The Donghai Bridge was built in Shanghai, China, and finished on December 10, 2005 //
 * 3) //**What is the purpose of this bridge? What does it span and what does it connect?** The Donghai Bridge connects the mainland Shanghai to the offshore deep-water port, Yangshan, crossing over the Pacific ocean.
 * 1) //**Why was this bridge needed**? The bridge was necessary to connect mainland China to the Yangshan offshore deep-water port, that builds cargo ships and other marine vehicles, which was to be finished in 2010, five years after the bridge. //
 * 2) //**What type of bridge is it (arch, suspension, cable, beam, etc.)?** The Donghai Bridge is a cable-stayed low viaduct bridge, which means it is mostly on top of pillars under the water but is stayed by cables from these supports in some places.
 * 1) //**How much did it cost?** The Donghai Bridge was a massive project, costing about 10 billion yuan, or 1.2 billion U.S. dollars. //
 * 2) //**What materials were used to build this bridge**? The Donghai Bridge was constructed of 670 steel bridge planks, each the length of four volleyball courts, and metal cable.
 * 1) //**What were some of the special challenges that the bridge engineers faced? How did they overcome these challenges?** The main problems were the huge scale, the severe environmental conditions of the ocean, and the technical difficulties brought about by a short construction duration of only 40 months. The engineers used strong steel and a mechanism called "group piling" to overcome the wave currents. They also built the bridge in an S shape to bend more to the ocean's will and not be prone to snapping. //
 * 2) //**How long did it take to build this bridge?** Amazingly, the enormous project took only two and a half years, give or take a month. //
 * 3) //**What are the measurements of this bridge?** The bridge is a total of 20.2 miles long. The largest section underneath it to allow ships is 420 meters across. There are six lanes for cars with a 60 mph speed limit. //
 * 4) //**Did you find any fun or interesting facts or stories about this bridge**? The Donghai Brdige was the longest deep-sea bridge in the world until Hangzhou Bay Bridge opened in 2008. Is a huge tourist attraction for China because of the beauty and the connection between the two industrial hotspots. //media type="youtube" key="KG2ZadbSXE8" height="312" width="370" align="right"