This article introduces three outstanding innovations, i.e. utilization of the steel casing for the piles to estab-lish a construction platform for Sutong Bridge s large and deep-pile groups ; 5000 ton steel cofferdam lowered as a whole and used as a protective structure against impact from ship collision; Permanent scour protection. This article also pres-ents economical and reasonable design method for large bridge foundation and explains the significance of innovation and technical integration to large and complicated project construction based on the above theory.