In September 2023, three 3D-printed bicycle bridges were inaugurated as part of the renovation of the Dutch highway N243 between Alkmaar and Koggenland. The bridges span various watercourses along the route.
According to the province of North Holland, which oversaw the construction project, the bridges were manufactured using the Weber Beamix 3D concrete printing process. The advantage of this technology is lower material consumption and waste due to the elimination of formwork, he said. In addition, 3D printing allows great freedom of form, he said.
The unreinforced concrete structures were designed specifically for the landscape. According to Weber Beamix and the province, the project highlights the potential of 3D printing for sustainable and resource-efficient construction.
The official inauguration of the unusual bridges took place on September 29, together with the opening of the renewed rural road. In the coming weeks, remaining work is to be carried out, after which the 3D-printed structures will be fully operational.