The point where the Waal crosses the Maas-Waal canal near Nijmegen is one of the busiest waterway intersections in the Netherlands. This motivated Rijkswaterstaat (The Directorate-General for Public Works and Water Management) to set up a traffic station on the site, from which shipping could be properly supervised. To provide the widest view over the water, whilst disrupting the river landscape as little as possible, the traffic station stands outside the dykes, at the foot of a spit of land. The risky nature of the location led to the ellipse-shaped building being erected on a concrete plinth. The three-storey volume projects over the plinth in all directions, and as much as fifteen metres on the river side.
The requirement for unobstructed space and a column-free outlook was satisfied by combining a concrete core with a steel framework and projecting lattice girders. The thin sheet titanium skin forms an antithesis to the solid ramp in wood and Corten steel.