 northbound George Washington Parkway. The work zone this morning is going to block off all lanes at Spout Run Parkway. Follow the detour there. It's basically blocked off northbound between Spout Run and 123. South on 395, construction south of the Pentagon squeezes you over to the far right on the way down towards Glebe Road. You get all of your lanes back in Shirlington, and then there's another work zone south of Duke Street. They push you back over to the left on the way down towards the Beltway.