Core Viewpoint - The article highlights the historical and engineering significance of the Luoyang Bridge, recognized as China's first cross-sea beam stone bridge, and its role in the development of transportation and trade in the region [1][8][10]. Group 1: Historical Significance - Luoyang Bridge, located in Quanzhou, Fujian Province, was built during the Northern Song Dynasty and is the oldest existing cross-sea beam stone bridge in China, measuring approximately 731 meters in length and 4.5 meters in width [4][8]. - The bridge is part of the "Four Great Ancient Bridges of China," alongside Lugou Bridge, Zhao Zhou Bridge, and Guangji Bridge, showcasing its importance in Chinese architectural history [1][8]. Group 2: Engineering Techniques - The construction of Luoyang Bridge utilized innovative techniques such as the raft foundation method, which was crucial for building on the soft riverbed and managing tidal influences [14][20]. - The bridge's design included ship-shaped piers to reduce water flow impact, and the use of oysters for biological protection of the piers was a pioneering application of biology in bridge construction [22][20]. Group 3: Economic Impact - After its completion, Luoyang Bridge transformed transportation routes, facilitating direct access from Quanzhou to Fuzhou and enhancing trade connections, which led to a significant increase in the flow of people and goods [24][26]. - The bridge initiated a large-scale bridge-building movement in Quanzhou during the Song and Yuan dynasties, with approximately 170 stone bridges constructed, further boosting overseas trade [26]. Group 4: Cultural Heritage - The bridge features numerous historical artifacts, including stone generals and inscriptions, which provide valuable insights into the craftsmanship and artistic values of the Song Dynasty [6][27]. - Luoyang Bridge has undergone 26 repairs over nearly a thousand years, with each repair reflecting the historical changes and preservation efforts [37]. Group 5: Modern Preservation Efforts - Modern preservation techniques include the installation of monitoring systems to track structural integrity, ensuring the bridge's longevity while maintaining its historical essence [49][51]. - The local community continues to engage with the bridge's heritage, with the surrounding area evolving into a cultural landmark that attracts significant tourism, with nearly 800,000 visitors since 2025 [62].

Core Viewpoint - The article highlights the historical and architectural significance of the Luoyang Bridge, the first cross-sea beam stone bridge in China, built during the Northern Song Dynasty, and its role as a vital transportation artery and cultural heritage site [2][4][5]. Historical Significance - Luoyang Bridge, located in Quanzhou, Fujian Province, was constructed in 1059 and is recognized as a world-class engineering feat of the Song Dynasty [5][15]. - It is part of the "Quanzhou: World Maritime Trade Center of the Song and Yuan Dynasties" heritage site, which was included in the World Heritage List in 2021 [4]. Architectural Features - The bridge spans approximately 731 meters in length and 4.5 meters in width, supported by 45 stone piers made of granite, with a deck paved by over 300 large stone slabs [2][5]. - The construction utilized innovative techniques such as the raft foundation and floating transport for heavy stone slabs, showcasing advanced engineering methods of the time [7][11][13]. Cultural Heritage - The bridge features four stone generals and numerous stone carvings, which are significant for studying Song Dynasty stone carving techniques [18][20]. - The bridge has been a crucial part of the maritime Silk Road, facilitating trade and cultural exchange for nearly a millennium [21][30]. Modern Preservation Efforts - Continuous maintenance and restoration efforts have been made, including the installation of monitoring systems to ensure the bridge's structural integrity against environmental threats [27][29]. - The preservation team follows a "minimal intervention" principle to maintain the bridge's historical features while incorporating modern technology for monitoring [27][29]. Economic Impact - The Luoyang Bridge has historically transformed transportation routes, enhancing trade connections between Quanzhou and other regions, thus contributing to the economic development of the area [15][32]. - The surrounding area has evolved into a vibrant cultural and commercial hub, attracting nearly 800,000 visitors in the current year, showcasing a blend of traditional crafts and modern cultural elements [38].