Abstract: Abstract: In order to improve the construction quality and safety management level of Qugang highway, this paper utilized 4D-BIM technology in a highway construction project. Construction safety and quality monitoring and analysis were carried out in highway quality and safety management, and a 4D-BIM time-varying structural safety analysis system was applied. This study introduces technologies such as the Internet of things, intelligent sensing technology, and digital monitoring to dynamically monitor the construction safety of key bridges and realize digital management of construction based on the Internet of things, thus improving the quality and safety management level of highway construction. This study provides methods and examples for the application of BIM in the quality and safety management of road construction, and is of great value for deepening the application of BIM in the construction phase.

Key words: Keywords: BIM, 4D-CAD, road construction, quality management, safety management