The soft flowing topography of the landscape around the mouth of the Alpine Rhine was the initial point for the design of the bridge. A pair of shallow arches spans the river and joins smoothly with the decks of the approach bridges. The shallowness of the arch, the delicate suspenders as well as the low apparent height of the approach bridges minimise any feeling of detachment of the river area. The arch also functions as a landmark for the river crossing. The structure selected makes a very shallow gradient possible, whereby the road ramps can be kept low at the abutments. The river is spanned without supports, with piers and abutments shaped for good current dynamics.