BRIDGE INSPECTION PASSAGE

摘要

PROBLEM TO BE SOLVED: To provide a bridge inspection passage capable of sufficiently shortening duration to enforce traffic control for a bridge inspection vehicle; performing maintenance inspection of an entire lower side of a bridge; and being moved through simple operation.SOLUTION: A bridge inspection passage 10 comprises a first passage 21, a second passage 22 and a third passage 23 which overlap with each other. The first passage 21 and the overlapped second and third passages 22 and 23 can mutually slide in a bridge width direction. The third passage 23 and the overlapped first and second passages 21 and 22 can mutually slide in a bridge axial direction. The passages 21, 22 and 23 respectively have holding devices which can be freely positioned in a vertical and the bridge width directions and hold bridge girders. An electric cylinder 30 which extends and contracts in the bridge width direction is installed between the first passage 21 and the overlapped second and third passages 22 and 23. An electric cylinder 40 which extends and contracts in the bridge axial direction is installed between the third passage 23 and the overlapped first and second passages 21 and 22.