Abstract:The construction of new urban expressways is easily limited by various construction conditions in the urban area, the problems encountered by interchange nodes are particularly prominent due to their large floor area. In this paper, the construction conditions and planned interchange scheme of dafapu interchange in Shenzhen are analyzed in detail, three interchange schemes are proposed on the premise of minimizing the impact on the intersecting roads, The three schemes are comprehensively compared from the aspects of traffic capacity, project cost, land acquisition and demolition, pipeline relocation and finally determine the optimal design scheme. The analysis method of interchange nodes with complex urban construction conditions embodied in this paper can provide reference for similar projects.