Residents of Adams have been raising concerns on social media about the 'black things' that stick up from the railroad tracks on Columbia Street by Specialty Minerals. Ryan Pause/TSM Ryan Pause/TSMThose 'Black Things' Are Only Rubber-Mounted On WoodSffst.com describes railway systems as essential for transporting passengers and freight efficiently and securely. Rubber railway crossings differ from traditional materials such as asphalt or concrete by utilizing sturdy rubber panels that offer a durable, safe, and eco-friendly surface. Get our free mobile appRyan Pause/TSM Ryan Pause/TSMHow Long Do Railway Rubber Level Crossings Last, and What Are the Associated Risks? Railway rubber level crossings can last for many years with very little maintenance due to how thick the rubber is.