DEME to reinforce the Lekdijk

DEME has signed a contract for reinforcement of the Lekdijk in the Netherlands.

For this project, DEME is working together with Heijmans and GMB in the Lekensemble consortium to reinforce the dike between Wijk bij Duurstede and Amerongen (WAM). Commissioned by Hoogheemraadschap De Stichtse Rijnlanden, this vital project is part of the Dutch Flood Protection Program and aims to safeguard hundreds of thousands of residents from high water.

The Lekdijk, stretching 55 kilometers between Amerongen and Schoonhoven, is undergoing a major reinforcement to ensure long-term safety and flood protection for large parts of central and western Netherlands. Known as Project Sterke Lekdijk, the initiative is divided into six sub-projects, with the Lek Ensemble consortium playing a key role in the 11-kilometer stretch between Wijk bij Duurstede and Amerongen.

The WAM section will be upgraded with a focus on safety, livability, nature, and recreation and its redesign will align with the development of the Lunenburgerwaard, creating space for walking, cycling, and nature conservation.

The Lekensemble consortium was selected for its innovative approach to dike reinforcement, bringing together expertise in civil, water, and road engineering. These innovations help lower the costs of dike reinforcement by introducing new approaches in engineering and processes. Its methods include, for example, the use of lightweight plastic sheet piles that reduce CO₂ emissions and speed up installation.

Having previously collaborated on the Gorinchem-Waardenburg (GoWa) dike reinforcement project, which is also part of the national plan, the consortium is now ready to apply its combined expertise to this new challenge.

Jaap van der Weele, General Manager DEME Environmental, the Netherlands, said: “The contract and start of the implementation phase of the WAM project, following five years of design and planning, presents DEME with a valuable opportunity to showcase our expertise in flood protection and environmental challenges. I am extremely proud of our people and the collaboration with our partners in this project. Together, we are making a meaningful and sustainable impact towards a safer Netherlands.”

Works are expected to begin this month, with completion expected in 2027.