How to label a two lane road with only one label.

[Stella-MarisAgu1]

Does any one know an expression or how i can label only one side of the road lane. Right now both road names shows because they are different lines. I am using maplex and need to show all the roads city wide. I have tried dissolve tool but still not able to narrow it down to one label for the entire road name. I applied the do not duplicate button as well. Short of editing out the multiple names is there a faster way to achieve this.

Thanks for your help