Limburg locks modernisation

The locks at Born, Maasbracht, and Heel are vital components of the Maas Route, an important waterway for boat traffic in the European Union. Their three locks are some of the most impressive in the Netherlands, with rises of 12 m each. To accommodate larger vessels and modernize infrastructure, BESIX and Mourik undertook a comprehensive Design & Build contract to upgrade all three locks while maintaining operational continuity.

• Extension of lock chambers to accommodate vessels up to 190 metres

• Stabilization of existing lock walls

• Adaptation of booms and guidance systems

• Construction of a water-saving connecting channel between lock heads

• Conversion of the old Born pumping station into a hydroelectric turbine installation

• Execution of works in confined spaces up to 18 metres deep

• Continuous operation of the waterway during construction

• Engineering complexity: The project involved challenging geotechnical conditions, groundwater management, and deep excavation in tight spaces, requiring advanced safety protocols.

• Phased optimization: Lessons learned from the first lock were applied to streamline the planning and execution of the subsequent two.

• Water conservation: A connecting channel between lock heads was built to reduce reliance on pumping, preserving water during dry seasons.

• Renewable energy: The former Born pumping station was repurposed into a turbine installation to recover hydraulic energy during high water periods.

• Environmental focus: The project prioritized the protection of natural resources while enhancing the efficiency and capacity of inland navigation.

• Strategic impact: The upgraded locks now support larger cargo vessels, strengthening the Maas Route’s role in European inland shipping.