How can I get the attention of someone I've never met?

I was at a new bar a couple of nights ago, and there was a particular server that was continuously making eye contact with me, who I’d like to get to know.

I would like to get to know her, I know she had some interest in me, but I’m not sure how to go about it. How can I get in touch with her in a non-creepy way? The biggest issues are 1) this bar is not really close by so I can’t just drop in that often, and 2) I never actually talked to her, so although I am certain that she would remember me, it’s not like I can just find her on FB or something and message her (for example).