The present invention relates to a light-type vertically-turning opening bridge. It includes a main frame, said main frame is composed of oblique tower and bridge floor, said oblique tower is connected with one end of said bridge floor, and said one end where the oblique tower and bridge floor are mutually connected is set on the base seat and is turnably connected with said base seat, between said oblique tower and bridge floor an oblique guy rope is set and two ends of said oblique guy rope are respectively connected with said oblique tower and bridge floor, on the main frame a balance weight block is set, and said balance weight block can be slidden on said main frame. |