Genesis is so much deeper than a simple literal reading approach can offer....there is nothing in Genesis to tell/indicate/hint/lead one to accept it other than literal.
Other places it is obvious that a scripture may be other than literal, IE:
1 It is like-----
2 It is as if-----
3 A parable of----
4 etc, etc.
There are no such indicators re: the creation story, so one is "adding to His word" when claiming such; a very dangerous practice.
Oh, I really do not believe God would leave such an important detail (literal or figurative) out of His word since this is the foundation for the rest of His word. Once you decide you can change the specifics of the basics to suit "science", what restraint is there to change the remainder of His word to suit your on agenda?????
From the beginning the book is rich in symbolism and figuative language.
If you've missed this fact you've simply been reading Genesis-lite.
Rob