A tool for use in the construction and maintenance of elevators and escalators is provided. The tool includes a plurality of rails arranged in a parallel orientation, a plurality of support members connected to the plurality of rails and a plurality of treads attached to the plurality of support members. The plurality of treads is configured to provide a working surface upon which construction or maintenance personnel can stand, sit or kneel. The plurality of treads is further configured to provide a working surface upon which materials can be placed. The tool is configured to bridge gaps formed within the elevators and escalators and bridge gaps formed in building spaces in and around the elevators and escalators.