According to TysonsTunnel.org, based on their preliminary engineering study -- the cost for Tysons tunnel (phase 1 of the Dulles rail) actually less than originally projected at $4 billion. And, it could be draw down by an additional $209 million, if the rail extension is put out to competitive bidding. However, Virginia still going to go ahead with elevated tracks. At least for now.
Now, that's an interesting study! I don't know if the study will influence Gov. Kaine to reverse his decision. FTA [Federal Transit Administration] clearly sends the signal to our Virginia congressional delegation -- to not *$&!# up the plan. Between no funding at all from the Fed and the timing -- it's a big risk to reverse what's already decided. So, let's move on, and get the development going.
* Tysons' Corner Supporters Unveil Price Tag $2.4 billion [DC Examiner]
* Tysons Corner Supporters Release Plans [Fairfax Times]