Abstract:With the development of economy and society of Changzhi City, as an important external traffic trunk road in the west, the traffic congestion of Yingbin and Taihang street is becoming more and more serious, and the traffic volume tends to be saturated during peak hours. By investigating the current situation of the road and traffic operation of Yingbin and Taihang street, this paper analyzes the existing problems of the current situation of Taihang street, and expounds whether Yingbin and Taihang street is suitable for the construction of viaduct from the aspects of functional positioning of Yingbin and Taihang street, current traffic analysis, the impact of viaduct to the road network in the core area, and the impact of Viaduct to landscape and traffic. Finally, According to the analysis of current problems, the traffic improvement scheme of Yingbin and Taihang street is put forward to alleviate the current situation of traffic congestion in Taihang street.