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While the true need for the bridge is disputed, it is undeniably an extraordinary feat of engineering.Built to withstand a magnitude eight earthquake, a super typhoon, and strikes by super-sized cargo vessels, it incorporates 400,000 tons of steel -- 4.5 times the amount in San Francisco's Golden Gate Bridge.Guo says the most technically difficult aspect was the construction of a four mile (6.7 kilometer) long submerged tunnel.The tunnel is a crucial component because the Pearl River Delta is one of the busiest shipping areas in the world. According to the Hong Kong-Zhuhai-Macao Bridge Authority over 4,000 vessels -- everything from passenger ferries to container ships -- cruise its waters every day.Guo explains that the tunnel is made of 33 "elements" -- huge hollow blocks measuring 590 feet (180 meters) long, 125 feet (38 meters) wide and 37 feet (11.4 meters) high. Each element weighs 80,000 tons -- about the same as an aircraft carrier. The elements were precast on Guishan Island, near Zhuhai, and transported to the construction site by floating pontoons and tugboats. "We excavated a foundation trench in the sea bed, laid a rock bed, then immersed the elements," he says.The tunnel runs between two artificial islands, each measuring one million square feet (100,000 square meters) and situated in relatively shallow waters. Building islands from scratch didn't prove easy, either, says Xinglin. A structural frame was created using 120 giant, hollow, steel cylinders, each one 180 feet (55 meters) high (equivalent to an 18-story building) and weighing 550 tons -- about the same as an Airbus A380, the world's largest passenger jet."The steel structures were manufactured in a workshop in Shanghai and then transported to the site by ship," Guo tells CNN. The team used hydraulic hammers to drive the cylinders into the seabed, then filled the cylinders and the enclosed area with sand. 1915

Wisconsinites Cast Their Votes On Election Day [PHOTOS]Get Live Results Here After the post went viral, the Wisconsin Election Commission posted a tweet discussing the number of ballots in comparison to the number of registered voters in the state.The election commission said the State of Wisconsin had 3,684,726 active registered voters as of Nov. 1. That is higher than the number of ballots counted so far, which is 3,240,275. The WEC also pointed out that Wisconsin allows for same-day voter registration, which could further increase the number of total voters. 567

With the resolution's passage by the committee, the full City Council will take up the issue and make a final decision at a later date. 135

when it got stuck under his wheel. Further investigation has revealed that juveniles in the Holllister store near the food court popped a balloon about two minutes after the janitor's balloon dropped, police said.Surveillance video showed people in the food court visibly reacting to a loud sound in the area. Some mistook the sounds for gunfire which sparked panic. Boca Raton Fire Rescue initially said one person suffered a gunshot wound. However, it was later determined the victim, identified as 30-year-old Julus Augustin, actually hit his head on the push bar of a door while trying to run out of the mall.Police said their research revealed that popped balloons have sparked active shooter scares in other parts of the country and say many sounds can be mistaken for gunfire or explosions, such as popping balloons, slamming push bars on doors, and items being dropped on a floor.Police say the juveniles who popped the balloon won't be punished. 954

When you're working for the most powerful man in the opera, you try to play ball, she said, adding that she was careful to never insult him and tried to appeal to his ego. 171