Changhu Bridge is the reconstruction and extension project of 318 national highway(Jingzhou section), with the overall length of 1787 meters and the surface length of 1400 meters. The main bridge is designed with cantilever casting structure and two-way four lanes. According to the construction party, they started construction on the eighth day of the first lunar month. Currently 40% of the project was finished including No.1 main pier out of water and 156 pile foundations. Box girder prefabrication and hollow slab prefabrication were simultaneously started .