 In 1998 a lawsuit was filed challenging the project, alleging that the environmental impact review of the project violated the National Environmental Policy Act (NEPA).In 2001 the federal court ruled in favor of VDOT on the suit but required the agency to complete a Supplemental Environmental Impact Statement addressing the road's impacts on the South Fork Rivanna Reservoir and the mitigation to minimize those impacts.That document was completed and accepted by the Federal Highway Administration in 2003.