We could, if we wanted to, make a block of teflon and bury it.
It would still be there a million years from now.
But as was mentioned above, ceramics are the biggie. Glazed items are almost indestructable.
I have no doubt that a billion years from now, there will be (somewhat) easily discovered remnants of man.
BTW, we have little problem finding the roads the Romans built.
True, and they are still in use. Didn't they find another one in north Italy last year. Of course, they are rock ,and rock after 2000 years is still pretty good. I see our modern roads revert to natural very quickly by comparison. What kind of things would last 100,000 years? I think ceramics would be crushed and ground into dust by then, but it would depend on the terrain. That, plus cities tend to be built on outwash plains and coastlines. Something like half the population of the US is right on or near the sea coast; nothing will remain of their archaeology in 100,000 years.