LIAISON provides knowledge and technical solutions to limit transport infrastructures (TI) emissions, both caused by transport infrastructure itself and to which transport infrastructure contributes. LIAISON covers the whole life cycle of TI to which extent TI design can influence and limit the overall emissions from construction, maintenance, operation and decommissioning of the infrastructure in a digital environment for next future TI. LIAISON adopts a holistic approach to tackle this challenge, because the development of particular technical solutions is not sufficient to achieve low environmental impact TI if they are not part of a broader strategy. The only effective way to ensure the implementation of paradigm-shifting technical solutions in the TI sector is to implement a governance framework (as the Dynamic Multi-Infrastructure Governance Framework -DMIGF) that activates, articulates and monitors compliance with circular economy principles throughout the life of the infrastructure when developing and implementing these solutions. LIAISON will develop a collection of innovative technological solutions to reduce the environmental impact of the TI (materials consumption, emissions and footprint), minimize their LCC and optimize energy management (becoming prosumers), which will based on in the industrialization of the construction process, circular economy and digitalization of the operation, maintenance and decomissioning tasks. Specifically, the solutions to be developed are smart and sustainable beams, rigid road pavements and improved ballast; bioasphalts and smart pavement inspection system; intelligent tunnels control system and photovoltaic guardrails. LIAISON developments will be demonstrated in different TI (roads and railways) and in different European countries (Spain, Poland, Slovenia and Italy).