 It'll be six years before Erickson Circle is open again. WTOP's John Doman put on a hard hat and checked out the scene. It's a story you're hearing only on WTOP. Another major sewage tunnel meant to keep pollution out of the Potomac River will run from Georgetown to Anacostia, about five and a half miles in length. And it turns out this is the perfect place to start. It is very difficult to find this site of this, you know, size.