Abstract:Kuala Lumper, as the economic center of Malaysia, The elevated highway system has been widely developed in this city. As most of the urban land are private, the builders have to construct municipal elevated highway on the existing local road in high density town area, which leads to results like compact design, limited work area, high impact by structure nearby, etc. This artical mainly introducing a new work method of the installation of Pre-Cast Segmental Crosshead without temporary shoring system.