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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

When the special counsel's office became aware of them, it alerted the FBI, says spokesman Peter Carr. https://t.co/zdcKW7PyOG— NPR (@NPR) October 30, 2018 155

With the heightened fire danger, authorities recommended that residents avoid outdoor burning and have emergency preparedness kits in order. 140

While the vote was a big win for gun show advocates, some community members are expressing their disapproval. Rose Anne Sharp, founder of NeverAgainCA spoke to 10News Sunday. Sharp says the gun show is a crisis. “This is the most serious crisis we have faced with the gun show,” Sharp said. “At the last gun show that we attended with our mystery shopper, we observed more than 80% of the sale items were ghost guns.”Ghost guns are firearms assembled from kits, the Giffords Law Center says. RELATED: Gun show return to Del Mar Fairgrounds continues fiery debate“These guns pose a grave threat to public safety, and people who are legally prohibited from owning firearms are able to create them without consequences in most states,” the center says. AB 897 aims to fix that by defining the weapons as guns. “But it does not go in effect until 2024 so we need immediate emergency legislation to move that timetable up,” Sharp said. Sharp says part of her concern is ease of purchasing one of the firearms. “There is no background check. There is no waiting. There is no age limit. There is no registration, unless they self-report, and what we believe is there are no taxes being paid because we certainly were not charged for taxes.”According to a news release from the California Rifle and Pistol association, the Del Mar Fair Board enacted a ban on gun shows that took effect in January 1, 2019. RELATED: Del Mar gun shows can continue for now, U.S. district court judge rulesA judge later issued a preliminary injunction in June of 2019 prohibiting the board from enforcing the ban. Governor Gavin Newsom has also signed a bill banning the sale of guns and ammo at the venue. That law doesn’t go into effect until 2021. "It's been a mainstay for 30 years in San Diego and a small group of extremists tried to get it canceled and were successful for just a few months last year, but fortunately the courts stepped in and said, 'no you can't discriminate against a group based on what they described as their culture," Michael Schwartz, executive director of San Diego County Gun Owners previously told 10News. "The fight's not over."The gun show will be returning to the Del Mar fairgrounds March 14 through the 15. 2218

With the moon full, the tide is at its highest point of the month, and the storm surge could drive up to 4 feet of water into coastal neighborhoods. 148