A 3D concrete printed bicycle bridge
In June 2017, work started on the realisation of the world’s first 3D concrete printed bicycle bridge at the laboratories of Eindhoven University of Technology (TU/e) in the Netherlands.
On 17 October 2017, the resulting 60-metrelong bridge was installed as part of a new ring road around the town of Gemert. Witteveen+Bos was responsible for the structural design and engineering. Three-dimensional concrete printing is a unique production method that requires less construction materials and no formwork. This results in less waste and reduced consumption of scarce resources. Pre-tensioning has been applied to safeguard the cohesion of the 3D-printed concrete. This technology has great potential for other applications in construction projects. A 1:2 scale model of the bridge was successfully tested as part of the development process. Witteveen+Bos is also involved in several other 3D concrete printing projects. The innovative and practical nature of the technology, the resulting savings in materials usage and the reduction of CO2 emissions all help to achieve the UN Sustainable Development Goals to which Witteveen+Bos is committed.