Corridor Ballot Survey Results Dulles/VA 7 Corridor Fairfax County Parkway (VA 7100) I-495 (Beltway) Corridor I-66 / US 29 / US 50 Corridor I-95 / I-395 / US Route 1 Corridor Prince William Parkway (VA 3000) VA 28 (including Dulles Airport) Corridor Loudoun County Pkwy/Tri-County/VA 234/VA 659 Corridor