A large pre-stress continuous box girder bridge consists of two separate parts, ten spans deck and eight spans deck. The bridge was subjected to multiple airstrikes, which caused several damages. The most serious are the complete destruction of four conductive spans in the ten spans deck, the movement of the remaining six spans longitudinally by about 1.25 m and transversely by about 0.1 m. Local damages occurred in other parts of the deck structure and minor damages in the piers and abutments. The deck structures were constructed by incremental launching method (ILM). Rehabilitation of the bridge included repair of the local damages, lifting and re-instatement the six spans, which weighs about 9,000 tons, to its original position, the constructing and launching of new box girder to substitute for missing spans, and finally connecting old and new spans effectively. This paper introduces briefly the re-instatement of the six spans, connection details between the old new structures, then assessing the efficiency of connection by analysis and load testing the connecting span.