Construction Methods Developed to Enable Work Near Tracks in Times with Train Operation

East Japan Railway Company (JR East) has been constructing and renovating railway infrastructures and station buildings continuously. Most of construction and renovation work needs to be carried out in times with no train operation for safety because those worksites are located near railway tracks. Therefore, the authors have been working to develop construction methods whereby safety can be secured in times with train operation to reduce cost and time of such construction work. This paper introduces the present state and achievements of non-open cut and cast-in-place piling methods that were developed and applied and have less impact on nearby railway tracks.