The article describes a comprehensive integrated project delivery approach based on digital transformation of the classic BIM (Building Information Model/Modelling) workflow and integration of project stakeholders by means of a single cloud-based IT platform. The topic falls into BIM technology and associated processes to support design, construction and operation of underground traffic connections based on maximal utilization of underground space in urban areas. The step forward is made by putting Information in central place of BIM. Through this approach the requirements are set for state-of-the-art analytic methodologies - artificial intelligence utilization in civil engineering as seen in other engineering branches. Most important are state of the art support services for optimization and decisions, better communication between the client, experts and public, interdisciplinary collaboration between disciplines by multi-criterial decision support process.