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A bird’s eye view of locks and waterways

Waterworks

14 June 2019

Bridges, locks, barrages and waterways are of great economic importance to the Netherlands. They must function 24/7 and thus always be in perfect condition. To that end, Heijmans manages and maintains various waterways, from the high north to the deep south. A bird’s eye view of a number of waterworks.

The main Lemmer-Delfzijl waterway

The coming five years, Heijmans will, together with Dynniq HLD, be managing and maintaining a large number of objects on the main Lemmer-Delfzijl waterway. The waterway crosses thirteen municipalities and three water boards in the provinces Friesland and Groningen through three interconnected canals: the Prinses Margriet canal, the Van Starkenborgh canal and the Eems canal. Site manager John Bakker: “We replaced 123 kilometre signs on the banks of these canals. We replaced six signs per day. This is usually done from the water using a pontoon and a caterpillar crane. By chance, we were able access these signs via a road , but most of the signs are in places you can only reach by water.”

Sambeek locks

On behalf of Rijkswaterstaat (the Dutch Ministry of Public Works and Waterways), Heijmans is restoring the paddles of the Belfeld and Sambeek locks in the province of Brabant. The Belfeld West lock at one the two lock complexes, built by Heijmans about ten years ago, was experiencing malfunctions. A number of paddles in the lock doors which let water into and out of the chamber, were not working properly.

Project leader and contract manager Mark van den Hurk: “We are dealing with a total of 52 lock paddles and cylinders: we are renewing the parts of four lock doors, with each lock containing three chambers. We are lifting the lock doors from the water, hosing them down, removing the old paddles and cylinders and rebuilding them. Next, we will be repairing the coating on the doors and testing the workings of the paddles on dry land. After putting all four doors back in their place, we will be testing it all again. We are doing this in a building team with Rijkswaterstaat and our partners Hillebrand, Rebo and MTS. We expect to finish in November 2021. A beautiful job.”