A large sink hole opened in a DC street only blocks from the White House, it turned out to be a washed out sewer line from an improvement project done back in '96, that's 1896. This is not an unusual situation for American cities that are dependent on drainage projects done during during the Progressive Era, or at best during the New Deal. As little as possible has been done to make America work since the Reagan Revolution defined 'government as the problem, not the solution'.
The estimated $3 trillion shortfall in maintenance is just public infrastructure like the thousands of bridges waiting to collapse, but doesn't include privately held assets like high pressure natural gas lines that are nothing but ticking time bombs. There are also the abandoned chemical waste dumps, the overloaded and failing mine waste containment ponds, or those unregulated fertilizer and chemical plants waiting to go off like a small nuke. Then there's the actual nuclear plants and their massive hot fuel containment ponds waiting to do a Chernobyl dead zone on a large swath of North America.