This thesis explores the integration of sustainability in the Replacement and Renovation program (V&R) of Rijkswaterstaat (RWS) WNN, focusing on renewing and revitalizing aging infrastructure assets. With a substantial portion of RWS assets approaching the end of their design life, sustainability becomes crucial for continued functionality. The V&R program aims to modernize infrastructure, aligning with organizational sustainability goals. However, challenges in transitioning from innovation to formalization and standardization within the organization are observed. The study, based on literature review, desk research, and an in-depth case study with interviews, identifies gaps in stated ambition levels and a tension in defining sustainability among civil servants. Recommendations include raising ambition levels, providing clear subsidies for innovative solutions, and integrating financial project controllers within teams for effective funding strategies. The thesis emphasizes the need for contextual frameworks and concrete indicators to enhance sustainability in V&R projects, urging higher management to offer clearer guidance on sustainability goals of the V&R.