2. The oldest stone arch bridge in the world is (Zhao Zhouqiao).
Hangzhou Bay Bridge is a sea-crossing bridge connecting Jiaxing City in China and Ningbo City in Zhejiang Province. Located in the sea area of Hangzhou Bay, it is a part of Shenyang-Haikou Expressway (National Highway G 15) and an important part of urban expressway in the northeast of Zhejiang Province.
The foundation stone of Hangzhou Bay Bridge was laid on June 8, 2003. On June 26, 2007, the Helong Project was completed and the whole line was connected; It was opened to traffic on May 1 2008.
work progress
1992 to 1993, Ningbo municipal government compiled the Hangzhou Bay traffic corridor, and entrusted Shanghai Linli Company and China Communications Highway Planning and Design Institute to conduct a pre-feasibility study. ?
On June 2 1 2000, the Zhejiang Provincial Government decided to build the Hangzhou Bay Bridge.
200165438+February, Hangzhou Bay Bridge held a tender meeting.
On April 30th, 2002, the State Council, China, passed the Hangzhou Cross-sea Passage Project. On May 29th, the State Planning Commission of China officially issued the project approval.
On June 5438+ 10, 2003, Zhejiang Provincial Planning Commission and Communications Department jointly presided over the preliminary design of Hangzhou Bay Bridge. On June 8, the foundation stone laying ceremony was held for the Hangzhou Bay Bridge project. On October 28th, 65438/kloc-0, the construction of the north bank approach bridge of Hangzhou Bay Bridge started. 165438+ 10/4, the main project of Hangzhou Bay Cross-sea Bridge started, and on the 28th of the same month, the south bank approach project of Hangzhou Bay Cross-sea Bridge started. ?
On March 16, 2004, the Hangzhou Bay Cross-sea Bridge project entered a comprehensive construction stage.
On February 3, 2006, the main bridge of Hangzhou Bay Bridge completed the sinking of the last steel pipe pile.
On June 8, 2007, the south bank approach bridge of Hangzhou Bay Bridge was completed. On February 7, Hangzhou Bay Bridge completed the capping project of the main tower; On March 27th, Hangzhou Bay Bridge completed the construction of the last bored pile on the platform ramp in the sea. On May 26th, Hangzhou Bay Bridge completed the construction of the north bank approach bridge.
In June 1 1, Hangzhou Bay Bridge completed the closure project of Nanhang Road Bridge; On June 13, Hangzhou Bay Bridge completed the closure project of the North Channel Bridge; On June 26th, Hangzhou Bay Cross-sea Bridge completed the closure project of the whole bridge section, and the whole line was connected. ?
On May 1 2008, Hangzhou Bay Bridge was opened to traffic. ?
20 10 12.29, the offshore platform "Haitian Yizhou" of Hangzhou Bay Bridge was put into operation.