Abstract:The selection of urban expressway line will meet the environmental sensitive spots of urban built areas and water conservation areas. The selection of road line should be as far as possible from the edge of group and the periphery of urban area. The land is avoided to divide. The measures should be taken to minimize the adverse impact on the environment. Taking Shenzhen Nanping Expressway Phase II and Phase III Project as an example, on the basis of analyzing the road demand, functions, construction conditions and control factors, the countermeasures taken for road passing through the urban built area and Class I water conservation area in the engineering design are expounded.