What We Do
Immersed Tunnels
Immersed tunnels are our core area of expertise. We design temporary works, immersion pontoons, winch and sheave systems, and supervise the entire immersion process—from floating tunnel elements out of the construction dock to positioning them on the seabed with millimetre precision. We are currently involved in both the Scheldt Tunnel in Antwerp and the Weser Tunnel in Bremen, and have previously contributed to immersed tunnel projects in Sweden, South Korea and Brazil.
Locks and Hydraulic Structures
From navigation locks that regulate waterways to weirs that control water levels and culverts that enable infrastructure crossings, we provide structural design, engineering calculations and on-site technical support. Examples include the replacement of Locks 8 and 9 on the Zuid-Willemsvaart Canal near Helmond and the design of the dewatering caisson for the weir in Roermond.
Bridges and Viaducts
Whether engineering the float-in installation of the bridge deck for the new Botlek Bridge—the world’s largest vertical lift bridge—or designing the caisson foundations for the Çanakkale 1915 Bridge in Turkey, we thrive on technically demanding bridge projects.
Innovative Hydraulic Engineering
We also look beyond conventional solutions. The Great Bubble Barrier in Harlingen and Katwijk is a prime example: a curtain of air bubbles that intercepts plastic waste in rivers before it reaches the sea. MH Poly was responsible for the structural and hydraulic engineering of this innovative system.
What You Can Expect From Us
We are involved from the tender phase onwards—and often even earlier. We understand the risks associated with hydraulic infrastructure, know where practical challenges can arise, and communicate these openly from the outset. That means no unexpected surprises during execution.
