Abstract:Urban roads basically follow the detailed planning and design of the existing areas, especially the design of lane number and pavement structure needs to be determined through relevant calculation. Taking Renmin Road on the north bank of Yujiang River in Guigang City, Guangxi Province as an example, the design essentials of urban road are expounded by focusing on the calculation of road traffic flow to determine the number of lanes and the choice of pavement type. And combined with the characteristics of the project, the design ideas of roads along the river are described. The design of municipal roads is made more reasonable and economical under the condition of meeting the design code and urban development demand.