VIADUCT STRUCTURE AND CONSTRUCTION METHOD

PURPOSE: A bridge structure and a construction method thereof are provided to improve the exterior looking of a bridge by omitting bride supports. CONSTITUTION: A bridge structure comprises: a step of manufacturing a beam with a duck buried under a side surface; a step of constructing pier by laying a base member(110) under the ground and establishing a hinge member(130) on the upper side of the base member; a step of integrally constructing a cross direct beam by arranging beams on a mold and placing a cross direct beam on the upper side of the bridge pier; a step of constructing a bridge deck by manufacturing the mold on the upper side of the cross direct beam and placing the bridge deck after pouring concrete; and a step of inserting a steel wire, tensioning a steel wire, installing the steel wire which can grout both ends of a duck.