For the assignment 3- decay and disruption, I picked up five decays and disruption, which represent five different elements. The five elements are: facilities decay by human activities and environmental change; vegetation decay by human circulating and naturally disruption; pavement boundary and surface disruption; water erosion and deposition to the river edge and the salinization of soil in swamp area under the bridge. These five elements are the key decays found along the site by proposing an intervention to impede its process. In this case, I simply discuss the issue and the resolution in these five elements.