 From Virginia into the district across the Roosevelt Bridge, you have limited lanes. The ramps to Constitution Avenue, Ohio Drive, and the E Street Expressway block because of the festivities going on downtown along the National Mall, so you must continue on the Potomac Freeway up toward the Whitehurst Freeway and K Street. On 395, you're pretty good until you get to about Crystal City, and then it really kind of grinds to a halt.