PROBLEM TO BE SOLVED: To provide a cure method of a concrete bridge girder applicable even to a side surface and an under surface of the concrete bridge girder integrally constructed with cast-in-place concrete.;SOLUTION: The outside of the bridge girder 1 is covered by providing a covering surface in a position of respectively separating a proper distance from both left-right side surfaces and a bottom surface of the bridge girder 1, by using a work scaffold installed in a construction site of a bridge. A water supply pipe 81 with a water sprinkling nozzle 83 is arranged inside an area covered with its covering surface, and the area inside is maintained in a wet state by spraying water into the area from the water sprinkling nozzle 83, and concrete after die-removal is cured thereby. In a cantilever overhang construction method for extending by successively joint-connecting the bridge girder 1 from a constructed bridge body in a construction block unit, while moving the covering surface in a bridge axial direction together with the work scaffold 4, the concrete after die-removal is cured in the construction block unit.;COPYRIGHT: (C)2015,JPO&INPIT
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