Transport Infrastructure Ireland’s (TII) primary functions are to operate, maintain and extend the life of national roads, tunnels, and light rail infrastructure in Ireland. Among the priorities for investment include the use of asset management principles to manage assets safely, sustainably, efficiently, and effectively over their useful life. This paper describes TII’s journey in asset management including the development of TII’s recently published Asset Management Policy, Strategy and Framework, as well as the ongoing development of Strategic and Group-level Asset Management Plans for the various asset classes within TII to align with its overall strategic objectives and organisational goals. A best-fit approach has been developed which addresses TII’s changing operational conditions and commitments in terms of sustainability, circular economy, and climate adaptation. A hierarchical structure based on the “line of sight” principal is presented in which TII proposes to achieve its overall asset management objectives in line with an ISO 55000 integrated asset management system approach.