 Southbound on 395, construction south of the Pentagon, state of the right on the way down to Shirlington, then move back over to the left for a second work zone between Duke Street and Edsel Road on the way down towards the Beltway. Northbound on I-95, very slow through the work zone where you only have one lane of traffic getting by to the right from Quantico all the way up to Dumfries. Pretty slow going through there. Route 1 might not be such a bad alternate.