It depends how high up the bridge is and how the person falls :/ If you break the surface of the water first them you might survive the fall (then break your legs and drown in the process)
Could you please re-upload; RELEASE[110520][ひよこソフト] サクラの空と、君のコト -Sweet Petals For My Dear- 初回限定版 [v1.01 + スペシャルディスク]
Sorry, but RG doesn't work for me.