Flood protection offered by 60 visor gates
To the South of the channel at Veessen, an 800-metre-long inlet construction was built, consisting of a concrete bridge with 60 spans, including 60 steel visor gates. These gates seal the gap between the bridge pillars under normal circumstances and are only opened when the water is extremely high to prevent flooding. Each visor gate is 12 metres long and is opened with help from hydraulic cylinders when the water level rises. Iv-Infra designed the steel visor gates and mechanical details and performed a failure probability analysis to test the reliability of the system.