- The "modified baseline underground alternative" (i.e.--the station is underground in the middle of the main parking lot) recommended by the staff and selected by the Dulles Corridor Committee and MWAA Board of Directors will cost between $912-$949 million to build. With its construction, Phase 2 of the Metrorail project will cost $3.50-$3.54 billion according to this analysis.
- The less expensive "North Garage Aerial Alternative" (above ground) would cost $587 million and Phase 2 would cost $3.17 billion.
- The original "Terminal Tunnel Alternative" would cost $1,440 million and Phase 2 would cost $4.03 billion.
MWAA Staff Analysis & Recommendation for Dulles Station--042011