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Installing the temporary bridge after excavating the railway requires installing movable cross beam, but as itdoesn’t requires isolating the catenary or cutting the rail, it’s applicable to double-track with frequent operation. In thisstudy, a displacement meter was placed on temporary bridge to monitor the displacement pattern in curve section (R400)completed using temporary bridge method, and wheel load, lateral pressure and derailment coefficient were measured toevaluate the load imposed on track and the stability in curve section (R400) for quantitative evaluation of training runningsafety. As a result of the measurement, when trains passing over a temporary bridge, the maximum value of Wheel load andLateral Force is analyzed as the 51% and 81% of standard level according to foreign country’s performance tests, There isno trouble with stability analysis in Wheel load and Lateral Force occurring. Additionally, Wheel load and Lateral Forceconsidered as the safety standard are tested 49% of limiting value regardless of trains, which the norm value quite well,there is no problem with train running.

Evaluation of Train Running Safety During Construction of Temporary Bridge on Existing Railway