Abstract:The scheme decision of urban expressway river-crossing channel often affects the overall scheme and investment scale of the whole project. Taking an expressway crossing Yongjiang River in Ningbo as an example, aiming at various constraints, considering the traffic organization of both sides of the river, the regional environment, and the cost and difficulty of the project, two schemes of elevated expressway and underground expressway are deeply demonstrated. Finally, the construction form of "elevated expressway + locally separated interchange" is determined for use. This scheme will effectively improve the traffic situation and enhance the efficiency of urban traffic operation.