Infrastructure projects typically bear a sizeable ecological footprint and often lead to significant environmental impact due to the extraction, processing, and transport processes. At the same time, large segments of existing Dutch infrastructure must be replaced and/or renovated (Replace & Renovate programme). The Directorate-General for Public Works and Water Management (Rijkswaterstaat) has set its objective to become fully circular from 2030 and has appealed to the market via the SBIR Programme (Strategic Business Innovation Research) to develop innovative circular viaducts that can be reused repeatedly. Iv-Infra took on this task and developed the so-called GeoDuct with various partners, including Dura Vermeer, Geotec Solutions, Heusker, Wagemaker, Ploegam and Zwarts & Jansma Architects.