A new cross-sea bridge officially opened to traffic in east China's Zhejiang Province on Wednesday, with the 25-kilometer-long structure helping to greatly boost transportation and connectivity for potentially hundreds of thousands of residents. The bridge is one of the longest structures of its kind in the world, connecting the islands of Zhoushan and Daishan in the East China Sea. Automatic equipment was deployed during its construction which greatly saved on labor force in the building process.