TAIPEI (Taiwan News) — The Ministry of Transportation and Communications has begun implementing measures to reduce wind noise caused by airflow through the pedestrian railings of New Taipei’s Danjiang Bridge.
Following a site inspection in January, the Wind Engineering Research Center at Tamkang University said the noise is caused by densely arranged bridge railings, which under certain wind speeds and directions generate resonance. The noise has reportedly affected some residents in Bali District.
The project, costing NT$11.5 million (US$350,000), involves the installation of sound-absorbing strips on the railings, with work expected to be completed by Wednesday. The center said the measures could reduce noise by more than 30 decibels, per CNA.
To prevent the rubber strips from deteriorating in humid conditions and under sunlight exposure, the next phase in May will see them covered up with aluminum plates. The ministry said the additional installations will not affect the bridge’s exterior design.
At an inspection event on Thursday, Transportation Minister Chen Shih-kai (陳世凱) said the bridge is scheduled to open on May 12, with construction in its final stage. He urged contractors to ensure safety and keep the project on track for the planned opening.
Chen noted the bridge will be the world’s largest cable-stayed bridge with a single pylon and an asymmetric design. He highlighted construction challenges, including weather conditions, technical difficulties, and its location at a river mouth.
The bridge is expected to cut commuting time between the Tamsui and Bali districts by about 25 minutes. The main bridge spans about 920 meters and has a deck width of 44 to 55 meters. The design includes two express lanes in each direction, as well as motorcycle lanes, sidewalks, and bicycle paths, and reserves space for a future light rail system.
The Highway Bureau said the bridge is supported by 94 steel cables, each designed to reduce vibrations and withstand earthquakes up to magnitude 7.
The bureau added it will cooperate with the New Taipei City Government to hold events on the bridge before its opening, including a marathon, cycling activities, and a parade.
