Abstract: It has apparently high risk for bored bottling pile construction in super bridge foundation construction. The full understanding of risk source, the implementation of risk assessment and risk analysis, the prompt prevention and elimination of construction risk have vital significance. As for the Fuchun River great Bridge Project, it was analyzed for contractors that the risk in cross-river bridge foundation construction on complicated geological conditions. From the project management, risk factors were particularly discussed for project cost, progress and quality in over-length bore bottling pile construction. In order to profit construction management, promote project benefit and accelerate the development of risk management, a multilayer fuzzy synthesis evaluation model has been established for the bridge project risk.

Key words: great bridge, complicated geology, bored pile, risk analysis, synthetical evaluation