A lot of it yeah but large thick things like bridges will probably survive for quite a while in usable sized chunks. Copper too will be pretty available and pro

A lot of it yeah but large thick things like bridges will probably survive for quite a while in usable sized chunks. Copper too will be pretty available and protected in wires. It really depends on what timescale we're talking about though in the end. If we talking about humans rebooting there could still be usable bits around depending on how long it takes to begin rebuilding. If we're talking about a whole new intelligent species I agree they'll have vanishingly little to work with.