Abstract:Viaduct is a common form in the construction of urban expressway. According to the control factors such as land use, surrounding buildings, upper planning and the others, the viaduct is divided into the full-width form and the sub-width form. Taking the construction of West Outer Ring Expressway in Jining City as the background, the full-width and sub-width forms are adopted for the viaducts. The scheme design and comparative analysis are carried out from the aspects of traffic organization, old road utilization and landscape effect to determine a more reasonable section form of expressway, which provides some reference for the construction of other expressways.