Based on the maintenance and reinforcement of one port entrance overpass，synchronized with PLC control system
and positioning the hydraulic jack system to synchronize the lifting of the whole cast-in-situ continuous bridge, the temporary
multi-bearing system was established，the internal forces and deformation were released caused by incompletely reset of the
bridge，and then the correction and reset of the bridge were carried out by using the jack on a side，furthermore，the original
bridge support and other components were replaced. The technology provides references for correction and reinforcement of
similar structures in future.