Map of construction project districts

Under Construction

I-66 Active Traffic Management System

Improving safety and incident management from the D.C. line to Route 29 in Gainesville

Project Photos

Project at a Glance

Begin Date
August 2013

Est Completion Date
Fall 2015

$38.6 million

Lengths and Limits
D.C. line to Route 29 in Gainesville


Northern Virginia

Kamal Suliman
Program Manager
Christiana Briganti-Dunn, P.E., CCM
Design-Build Manager
Dave Fitzgerald
Construction Manager
Shirlene Cleveland, P.E.
Program Manager for Design-Build Projects

***** NOTICE *****

Lane closures will occur from Tuesday night, July 28 through the morning rush Wednesday, July 29 along eastbound I-66 between Nutley Street and I-495 due to emergency repairs. Read more.

Wednesday night, July 29 into Thursday morning, July 30, the following lane closures will occur on westbound I-66 between Nutley Street and Route 123 for gantry work:

  • Shoulder, single-lane and multiple-lane closures between 9 p.m. and 5 a.m.
  • Intermittent full closures of up to 30 minutes each between midnight and 5 a.m.

About the Project

Construction is now occurring on this project that involves installing an active traffic management (ATM) system on I-66 through Arlington, Fairfax and Prince William counties from the Washington, D.C. line to Route 29 in Gainesville. The system will improve safety and incident management and include new sign gantries, shoulder and lane control signs, speed displays, incident and queue detection, and increased traffic camera coverage.

Drivers are seeing the new overhead sign gantries installed between the Beltway and Route 29 in Centreville.

TransCore is designing and building the active traffic management system. 

The project is scheduled for completion in the fall of 2015.



Public information meeting presentation and video (July 2011)
ATM and I-66 project fact sheet and frequently asked questions
Project treatment definitions and conceptual design
Gantry variations
Other I-66 corridor initiatives

More information on similar projects in the U.S. and Europe:
Washington Department of Transportation (WSDOT)
U.S. Federal Highway Administration (FHWA)
United Kingdom Highways Agency

State Project Number: 0066-96A-917   UPC: 98017

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Page last modified: July 29, 2015