The present invention is to improve the bending strength to the external force by prestressing to pre-stress the compressive stress to be able to construct the bridge in a more economic way when the time to repair and replace the new bridge or aging bridge A beam beam girder for bridges is provided, and the beam beam girder is prefabricated and standardized at the factory, not at the work site, and is formed by a left-right asymmetric structure, which is deflected by placing one end of the beam girder adjacent to another beam girder. In addition, it provides a beam beam girder for minimizing stress.;In addition, the present invention is a concrete compressive force obtained in the process of the reduction of the bridge section (L ') to the reduction point (L') for the introduction of the compressive force by the subsequent lower bridge bridge (L) is introduced into the continuous point portion when the bridge is continuously connected In order to effectively and economically control the sub-moment of the point portion, the bridge continuous reinforcing bars 500 which are arranged on the beam girder are completely fixed with the reinforcing bars 520 arranged at predetermined intervals, and the bridge continuous reinforcing bars By varying the fixed point spacing (ℓ) of the reinforcing bar anchoring hole 520 for fixing the 500 is characterized in that for controlling the successive point portion moment.;Bridge, beam, girder, pretension, precast, minor moment, compressive force
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