Building Information Modelling is progressing and improving stakeholders' abilities to manage their projects from very basic steps to their retirement. BIM is preparing a comprehensive basis to facilitate access to all information of the elements and the whole project on the nD platform; also, it helps to provide detailed progress reports at any time. A global movement is being started to implement BIM and use its advantages. In spite of all achieved benefits due to BIM adoption and all investigations, a limited number of countries prepared approved roadmap, and related rules and regulations. In this paper, the BIM implementation state is investigated in three categories globally based on a literature review. Also, the barriers and challenges hindering the BIM adoption extracted, and the ten most frequent global impediments achieved that lack of trained personnel is the most crucial impediment in the way of BIM, and absence of awareness around the BIM advantages is second; also, heavy initial funding is hindering BIM. In addition, it is vital to compensate for the lack of needed rules and regulations; conversely, successful BIM adoption requires powerful support from the government. The additional barrier is sticking to traditional methods, and resisting change, as well as sufficient and efficient training, is a crucial activity to adopting BIM. Likewise, providing appropriate software requires considerable investment; governmental supports, as the key, driver will remove barriers and facilitate the process; also, it requires to develop investigations to generate BIM science and technology that will motivate industry.