Innovation, quality, and professional excellence define the Mong Sen Bridge, which is located in a region prone to landslides.
Its longest span of 132 meters, combined with a minimal number of piers, strategically reduces the risk of landslide impact, ensuring both safety and stability.
The bridge’s design blends seamlessly with the regional landscape, featuring slender girders and tall piers that complement the mountainous terrain, making it not only a vital infrastructure piece but also an attraction for tourists. Mong Sen Bridge has set a new record in Vietnam for cantilever box girder spans, utilizing external prestressed cables alongside high piers, representing a significant technological advancement in bridge design within the country.
With a pier height of 79.9 meters, it is currently the highest bridge on land in Vietnam. The project adhered to strict quality control measures, complying with the ISO 9001 quality management system, and all design documents followed national codes and standards. Additionally, cost estimation was fully compliant with national regulations and norms, ensuring transparency and efficiency.
Mong Sen Bridge stands as a model of innovation in engineering and design, showcasing Vietnam’s progress in infrastructure development and its commitment to quality and safety.
The bridge features a total length of 612.2 meters, with spans arranged as 45m + [84 + 3x132 + 84.9] meters. It has a cross-section width of 14.5 meters. The main structure consists of a continuous, pre-stressed reinforced concrete girder with five spans, arranged as (84 + 3x153 + 84.9) meters, and constructed using the balanced cantilever method.
The approach bridge comprises a simple 45-meter-long pre-stressed reinforced concrete box girder, constructed on scaffolding.
The main piers are cast-in-place reinforced concrete, designed as double-column piers connected to continuous box girders. Each pier’s two columns are linked by a horizontal reinforced concrete beam, 2 meters thick. The piers range in height from 67.3 to 79.9 meters.
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BRITEC - Subsidary of Transport Engineering
Design Inc (TEDI)
People’s Committee of Lao Cai province
Lao Cai-Sapa BOT Investment joint stock
corporation