 You're listening to WTOP. WTOP News. Facts matter. It's 252. A huge D.C. water construction project blocks off the western end of Ohio Drive, making for only one way into and out of the Tidal Basin right now, and it will be six years before Erickson Circle in that area is open again. WTOP's John Doman decided to get a closer look at the project alongside construction workers. This is a story that you're only hearing on WTOP.