Project Overview

The Dulles Greenway is a six-lane, 14-mile, limited access toll highway in Loudon County, Virginia in suburban Washington, DC connecting Dulles International Airport with US 15 in Leesburg. It serves as an extension of the state-owned Dulles Toll Road (DTR), which connects Dulles Airport and other high-density employment centers in the corridor to the rest of the Washington metropolitan area. The two toll roads connect at a toll plaza, where drivers pay a single toll that is divided between the two operators.

The Dulles Greenway was the second toll facility in the U.S. in the Interstate era to be developed under a long-term design-build-finance-operate-maintain (DBFOM) public-private partnership (P3) concession. The project was developed by Toll Road Investors Partnership II (TRIP II), with an initial concession period of 42.5 years. Over the operation period, the project concession period was extended 20 years to 2056, and the toll structure changed to a variable pricing structure to improve the management of peak period congestion. In 2005, Macquarie Infrastructure Group (MIG, now Macquarie Atlas Roads) purchased the concessionaire, TRIP II. In 2006, MIG sold a 50 percent stake to Macquarie Infrastructure Partners.