Used as the auxiliary supporting system for erection of the spans,the pier-side brackets to be arranged at the main piers of the bridge were indispensible.

With the construction practice of Yangjialing Extra-large Bridge,this paper introduces the method of applying prestressing technology to preload high-pier brackets in the construction of 0# girder section of the continuous rigid-frame bridge with high-piers.

Through a case of a viaduct project, the author discovered its general utilization and technique reconstruction principle including the key points of its structure disassembly, pier exchange and widening designs, etc.