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Ouena bridge
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Project Date :
2017
Project description :
The Ouena bridge is a 80-meter-long structure with a frame structure called a discharge structure, offering a larger hydraulic section in case of flood. The project required a pre-loading phase with vertical drains (on the right bank) and pre-loading embankments (on the left bank) in order to compact the soil.
The main structure consists of four 20-meter spans based on traditional 30-meter deep cased drilled piles (1400 mm diameter for abutments and 1200 mm for river supports). 40 prestressed beams of 18.8 m were required for the 4 spans. The total concrete volume of the two structures reaches 900 m3.
Client :
The North Province
Worksite supervisor supervisor :
The North Province
Location :
Kouaoua (East cost of New-Caledonia)
Reception date date :
December 2017
Cost of structural works :
610 000 000 XPF
Technical expertise :
Preloading embankments with vertical drains, massive earth moving, drilled piles of great depth, long beams
Particularities of the project :
- Traditionnal bored piles
- Prestressed beam bridge