Dike reinforcement Sint-Annaland

Dike reinforcement

The project

The primary flood defence along the Sint-Annaland marina was found to be inadequate due to the failure mechanism of internal macro-stability. This prompted Waterschap Scheldestromen to initiate the reinforcement of the dike, covering a stretch of approximately 500 metres. Iv supported the water authority in designing the dike reinforcement. Under the High Water Protection Programme, Iv worked on a safe and future-proof design.

During the exploration phase, we investigated various reinforcement options, which led to a preferred alternative. This alternative was further developed into a final design and subsequently translated into a RAW specification during contract preparation.

The challenge

Integrating the dike into the existing environment of the marina, as well as accommodating future spatial developments, made this a complex project. Part of the dike also serves as an access road to a popular recreational area, which needed to remain accessible during the summer months. Additionally, the available space was limited by both existing and planned developments next to the flood defence, requiring careful consideration of various stakeholders, including the Municipality of Tholen, the marina, residents of the neighbouring chalet park, and project developers.

Due to the limited space, creative solutions were required, such as a concrete channel and infiltration sewer, which together take on the role of the dike’s toe drain. Moreover, in collaboration with the Future Dikes research programme, a species-rich grass mix will be applied to the future dike covering. This contributes to biodiversity restoration and reduces CO2 emissions.

The impact

By working with a compact project team, we successfully completed the project on time and within budget. The exploration and design phases were completed in approximately 1.5 years, which is significantly faster than usual for HWPP projects. Additionally, we were able to provide the water authority with extra support by offering additional capacity in areas such as environmental management and project preparation.

Curious about the possibilities for your project?

Wouter, managing director Infra and also COO of Iv, would be delighted to discuss this with you! Get in touch via +31 88 943 3200 or send a message.

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Wouter van der Wiel