Dulles Rail Construction May Begin Soon – Fairfax County News/WTOP Even though the new Silver Line has not been made official, utility relocation may be underway before Dec. 21. Progress at last! I’ve heard that the project is probably a go at this point and it is merely figuring out the particulars. It seems that the line will be built with elevated tracks instead of underground, which is a shame, but ultimately not a deal breaker for me. Also, the service roads along VA 7 will evenutually be eliminated during this project. That may be painful at first, but I think will ultimately improve traffic flow a lot.