Route 123 Interchange
Major reconstruction is planned for the Route 123 Interchange as part of the Transform 66 project. The new interchange design:
- Provides access to and from the future express lanes from I-66 East and West
- Improves safety at the interchange
- Connects the City of Fairfax and the planned George Snyder Trail with the new shared use path and neighborhoods in Oakton with a grade-separated trail through the 123 Interchange
Get a closer look at what’s planned through the Transform 66 Interactive Map.
What Neighbors Can Expect
- Noisy construction activities such as bridge demolition and pile driving will be avoided at night, when possible. Noise to expect at night includes back-up alarms on equipment and trucks, which is necessary to protect worker safety.
- Lighting of the construction work area will be directed to minimize light pollution for nearby residents.
- Project emails and website will be used to communicate major traffic switches or nighttime work.
What Drivers Can Expect
- The Route 123 Interchange is being re-constructed to provide direct access to and from the future eastbound and westbound I-66 Express Lanes. These improvements require a series of traffic pattern changes during construction.
- Starting the week of August 13, 2019, drivers traveling on I-66 West to Route 123 (Chain Bridge Road) North toward Oakton will use a new, temporary exit ramp for approximately three months. The temporary ramp will have two right-turn lanes and a traffic signal to allow drivers to access Route 123 North. The ramp from I-66 West to Route 123 South will continue to be in use during this time.
- See project flyer for more details.
- Drivers should expect additional changes as work progresses at the interchange. Sign up for project email updates to keep up to date.
|Clearing activities begin
|Traffic pattern shifts begin
|Ramp and bridge work begin
|Express lanes open