 And a portion of 14th Street. Also, the northbound 12th Street tunnel is closed, meaning you can't get to the 12th Street expressway exit from northbound 395. That is blocked off. Portions of Constitution, Pennsylvania, Massachusetts Avenue. Again, a full list of closures on WTOP.com. Now, if you're on the Beltway in Prince George's County, you are still solid in both directions. Headed toward Pennsylvania Avenue, the outer loop after Pennsylvania, the left side blocked with the wreck.