 The new Supplemental EIS was required due to the history of litigation and controversy associated with the project.VADOT is currently working with Shirley Contracting Company and Dewberry Inc, to build a grade-separated interchange, costing $26.9 million, at the intersection of US 15/17/29, Business US 15/17/29, and SR 808 (Lord Fairfax Road) south of Warrenton.A bridge will be built to connect Business US 15/17/29 and SR 808, and traffic lights which currently service the intersection will be replaced by an interchange, in which exit ramps from each direction will meet Business US 15/17/29 and SR 808 at two respective traffic circles.