The project is a semi-clover three layer interchange bridge. The total area of the bridge is 51538m2, and approach road surface is 13328m2. The lower structure of the bridge is pile platform type foundation. Foundation pile is formed by bored cast in-situ construction method. Box girders for the bridge are divided into two types: cast in-situ pre-stressed continuous box girder and general concrete box girder. The bridge decks are paved with C40 watertight fibre web concrete in 6-8cm thick.