The PPP project of Chongqing Hongyancun Bridge and Tunnel consists of the middle section (Hongyan Village Jialing River Bridge and Hongyan Village Interchange Project) and the southern section (Hongyan Village Tunnel to Wutaishan Interchange and Rail Line 5 Node Reservation Project). The engineering road is classified as an urban expressway, the main line has 6 lanes in both directions, the design speed is 80km/h, and the whole site is 4.95km. The estimated total investment of the project is about 4.5 billion yuan, including 2.9 billion yuan for construction and installation costs, 520 million yuan for land acquisition and demolition, 380 million yuan for other engineering construction costs, and 300 million yuan for basic reserve costs. The project cooperation period is 14 years, of which the construction period is 4 years and the operation period is 10 years. During the project cooperation period, social capital will meet the reasonable investment needs of the project by charging "shadow tolls" and commercial development income. The Chongqing Municipal Government included "shadow tolls" into its fiscal budget. The project adopts the invitation bidding method to select social capital. The successful implementation of the project provides reference for the application and practice of the PPP mode of urban roads in my country.