 The Roosevelt Bridge, you can only go on to the Potomac Freeway from the Roosevelt Bridge. Cannot access Constitution Avenue because of the ongoing festivities downtown. And a slew of closures downtown, basically south of the White House to the Tidal Basin, from the Potomac River almost all the way to the Capitol. The full list and maps are online at WTOP.com. Look it up first and know before you go. In the Palisades, MacArthur Boulevard, I hope they're enjoying the parade. It's on right now, and MacArthur Boulevard is closed between Whitehaven...