To the issue of multiple structural forms of container terminal approach bridges and no clear comparison of cost when used,a study is conducted on the structure and investment of container terminal approach bridges in the Yangtze River estuary region.Design methods that comply with current standards are adopted,and different bridge deck schemes such as small box beam structures,hollow slab structures,and hollow slab beam structures with different spans are proposed under local construction conditions.The stress is calculated and a reasonable structural cross-section is determined.Using the current hydraulic engineering budget software to calculate and compare the estimated investment of approach bridges for different schemes.The results show that for approach bridges with a spacing of less than or equal to 20 m,the investment in the hollow slab scheme is lower.For approach bridges with a spacing of more than 20 m,the investment in the small box girder structure is lower.Overall,the investment in the 20 m span hollow slab structure is the lowest.Within the range of 20-30 m,there is no significant change in investment in small box girders.