 Northbound Route 3 near 450 was a report of a wreck. Northbound 395 slows after the Pentagon onto the 14th Street Bridge, where you have to continue onto the freeway toward the 3rd Street Tunnel. The exits to the northbound George Washington Parkway is blocked, and you'll also find the entrances to the 12th Street Tunnel and to lower 14th Street blocked as well. You can find all the closures for the activities downtown on WTOP.com.