Ellen Kamilakis 703-259-2220
Michael Murphy 703-259-1757
Jan. 26, 2017
New Diverging Diamond Interchange Opens This Weekend
Interchange at I-66 and Route 15 first of its kind in northern Virginia
HAYMARKET – Northern Virginia’s first Diverging Diamond Interchange (DDI) at Interstate 66 and Route 15 will open to traffic Saturday, Jan. 28, according to the Virginia Department of Transportation.
The new DDI alignment is scheduled to open at 9 a.m. Jan. 28. The interchange will be closed overnight for final lane striping the night before beginning at 8 p.m. Friday, Jan. 27. Detour information is available on the project page.
Traffic will shift onto the new bridge, with two out of the three lanes opening Saturday. Work will still continue on the multi-use path, overhead signs, and concrete islands until summer 2017, when the third lane will then open.
The DDI’s innovative design shifts vehicles to the opposite side of the road and eliminates left turns that cross oncoming traffic. Two-phase traffic signals at each end of the interchange reduce time spent at red lights and move twice the number of vehicles as a traditional diamond interchange. VDOT recently completed its first two DDIs in Louisa and Roanoke, and has two more in the works in Blacksburg and Stafford.
Information in VDOT news releases was accurate at the time the release was published. For the most current information about projects or programs, please visit the project or program Web pages. You may find those by searching by keyword in the search Virginia DOT box above.