Research conclusions:For the bridge foundation in the complicated geological condition area, the integrated exploration method should be adoptedwith relyingmainly on the geological surveying andmapping. The fine geologicalprospecting should be adopted. In this way, there are lots ofworks to be done, but it is necessary and has to be done. The coordination should be done among all specialties, namely, the geology - specialized person firstmakes clear the geological condition for the controlpierand abutmentarrangementand late the bridge -specialized person carriesout the arrangements ofpier and abutmentand selection of the pile position.