In the mountainous regions of Zhejiang and Fujian provinces, ancient wooden covered bridges known as langqiao continue to serve as vital links between communities while symbolizing a rich cultural heritage. Taishun county in Wenzhou city, Zhejiang, is home to Beijian Bridge, a 51-meter wooden arch bridge originally built in 1674 and notable for its red-painted structure, tiled roofs, and traditional carvings. The bridge is among 32 historic covered bridges in Taishun and is part of a broader network of more than 800 such structures concentrated along the Fujian-Zhejiang borderland.

Langqiao, characterized by their covered corridors protecting timber frameworks, were traditionally central to village life—providing shelter, marketplaces, information exchange points, and spaces for worship. These roles persist today, embedding the bridges deeply into local identities. Recognition of their cultural significance has led Chinese authorities to designate covered bridges as a distinct category of cultural relics under a Three-Year Action Plan for their protection and restoration, launched in 2023 by the Publicity Department of the Communist Party of China Central Committee, the Ministry of Culture and Tourism, and the National Cultural Heritage Administration.

A recent nationwide survey identified 2,193 covered bridges as cultural relics, marking a significant increase from prior counts alongside enhanced conservation efforts. Experts highlight the engineering ingenuity behind these structures, which employ a traditional beam-weaving technique using mortise-and-tenon joints to create sturdy wooden arches capable of spanning wide rivers with minimal piers—facilitating water flow and navigation. This craft traces its origins to the Northern Song Dynasty (960–1127) and was inscribed on UNESCO’s List of Intangible Cultural Heritage in Need of Urgent Safeguarding in 2009, before being elevated to the Representative List of the Intangible Cultural Heritage of Humanity in 2024.

Despite their resilience over centuries, the bridges remain vulnerable to natural disasters. In 2016, Typhoon Meranti caused flash floods that destroyed three nationally protected bridges in Taishun within hours. Local communities responded swiftly, salvaging and drying over 90 percent of the wooden components, enabling meticulous restoration efforts led by traditional craftsmen and cultural authorities. Similarly, Pingnan’s Wan’an Bridge, the longest surviving wooden arch-covered bridge in China at 98.2 meters and originally dating to the 11th century, was lost to fire in 2022 but restored with a conservation approach emphasizing the reuse of original materials, blending old and new to maintain historical integrity.

These incidents accelerated legislative and technological measures to safeguard the bridges. Taishun enacted China’s first local protection regulation for covered bridges in 2021, with detailed implementation rules introduced in late 2023. Neighboring Ningde and Nanping in Fujian, as well as Lishui in Zhejiang, have followed or are advancing similar legislation. Alongside legal frameworks, modern technology plays an increasing role in preservation. AI-powered thermal imaging cameras, temperature sensors, and traffic monitors are installed on many bridges to detect fire risks and structural threats. These systems, integrated into regional monitoring platforms, allow for real-time alerts and coordinated responses across firefighting, water conservancy, meteorology, and law enforcement agencies.

In Ningde, pioneering video surveillance and early warning systems equipped with firefighting Internet of Things (IoT) devices further strengthen protection. Collaboration with universities employs high-precision 3D laser scanning and building information modeling to support disaster simulations and emergency planning. These combined traditional craft restoration efforts and advanced technologies aim to secure the future of China’s wooden arch covered bridges, preserving them as living cultural landmarks amid modern challenges.