 From Shirlington towards King Street, stay over to the right to get by there. Also have construction eastbound on I-66 coming in past Spout Run with a single left lane getting by in that work zone. Beltway construction in Tyson's Corner. Interloop, stay over to the right as you head past the Dulles Toll Road. You're going to get squeezed over eventually just single file on the way up towards the Georgetown Pike.