This paper presents systematic research of Korea Institute of Civil Engineering and Building Technology (KICT) to develop a competitive structural system using the advantages of Ultra High Performance Concrete (UHPC). Three projects have been proceeding for the material technology of UHPC (K-UHPC), K-UHPC guidelines and the application of UHPC to a cable stayed bridge. Material and structural behavior of K-UHPC, its design guidelines, and domestic and international applications of UHPC to bridges in the projects are presented in this paper, including the world’s first UHPC cable stayed roadway bridge at Chuncheon in Korea.