| 摘要 |
The present invention relates to an access stair installed to reach an inspection passage installed on a pillar or a pier for inspection and maintenance of a bridge and, more specifically, to an access stair for an inspection passage of a bridge, capable of facilitating manufacture, improving constructability and maintenance, enhancing safety, and providing psychological stability. The access stair for an inspection passage of a bridge according to the present invention is easy to use and improves the safety of use compared to a conventional vertical ladder by being installed slantly. Further, according to the present invention, a plate easily installed improves the safety as well as provides the psychological stability. |
