 Beltway delays interloop through Tyson's Corner from Route 7 up to the Dulles Toll Road. Construction in the right lane. They'll be out there overnight in that stretch where they narrow you down normally to three lanes in the long-term work zone. Overnight, it'll be just down to the two. Stay over to the left in order to get by. They're also doing work westbound on Route 7 from West Park Drive out past the Dulles Toll Road towards Lewinsville Road, alternating lane closures through there. You should be able to maintain at least one, most of the time two lanes through that stretch on the way out past Wolf Trap.