There is documentary series on the History Channel named Life After People.

The purpose of each episode is to predict what happens to infrastructure 1 hour to millions of years into the future after people have disappeared in the very near to very far future.

Although this does not directly correlate to your scenario, this TV show still gives a sometimes fascinating insight through CGI effects and some historical real world events as to what to expect when there is no modern society left.

There are also some details on Wikipedia about this TV show.

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Earth and sky, woods and fields, lakes and rivers, the mountain and the sea, are excellent schoolmasters, and teach some of us more than we can ever learn from books.

John Lubbock