5th Quadrant Burger First time eating at 5th Quadrant today. Had the clam chowder. Very good. Service was great too. Share this:TweetShare on TumblrLike this:Like Loading... Related March 28, 2014 by Sharon Thomas Posted in Pressgram365 and tagged with 5th Quadrant, burgers, Portland, Restaurant, Williams Ave. RSS 2.0 feed.