More than 200 people attended the Oct. 28 Virginia Department of Transportation (VDOT) unveiling of the design chosen for the Fairfax County/Fair Lakes parkways interchange. The $45 million needed for ...
23: amount of states with a DDI or planning to implement one 3: amount of states with one under construction 9: amount of states with a DDI in advanced design 9: amount of states where a DDI is being ...