Fairfax County supervisors questioned a funding plan on Tuesday put forward by U.S. Secretary of Transportation Ray LaHood to pay for the Dulles Rail project, saying too much of the burden fell to county taxpayers. LaHood’s plan would require each of the project’s stakeholders — Loudoun County, Fairfax and the Metropolitan Washington Airports Authority — to make sacrifices in order to bring the cost of the project down by about $1 billion to the initial $2.5 billion estimate. Fairfax could end up with the brunt of the financial pain, however, with its requirement to build a $126 million Metro station at Route 28. LaHood has all but promised significant federal help to ease Fairfax’s burden. [email protected]