Since repair of joints and bearings on traditional bridges is costly and disruptive to traffic, a goal of integral bridge design is reduced maintenance, with nearly maintenancefree substructures.

• 因为常规桥台涉及维修接缝和轴承，因而费用高和有交通干扰。而整体桥台设计则达到最低维护要求，下部结构几乎都不需要维护。