On this day, 34 years ago, on December 21, 1991 (November 16, 1991 in the lunar calendar), the Second Qiantang River Bridge was completed. On December 21, 1991, the Second Qiantang River Bridge, which created two of the world's best bridge construction projects in my country, was completed in Hangzhou. Wan Li, Chairman of the Standing Committee of the National People's Congress, cut the ribbon for the completion of the bridge, and the State Council sent a message of congratulations. The Second Qiantang River Bridge, a key construction project of the country during the Seventh Five-Year Plan, is a dual-use highway and railway bridge designed and constructed by my country itself. It integrates the double-track railway and the four-lane expressway. The total length of the railway bridge is 2,861.4 meters, and the total length of the highway bridge is 1,792.8 meters. It is known as the key project of railway construction "taking China from East China" and the hub of the Shanghai-Hangzhou-Ningbo Expressway. It has a total investment of more than 200 million yuan and lasted for 3 years and 8 months. According to bridge experts, the Second Qiantang River Bridge is the first bridge built in the world's strong tidal bore section. The 1340-meter main bridge across the Qiantang River uses a new technology of prestressed concrete continuous beams. The bridge deck does not have a joint, and its continuous length is the largest in the world. Comment: The first super bridge built in a strong tidal bore section ~