Major reconstruction is planned for the Route 123 Interchange as part of the Transform 66 project. The new interchange design:
Get a closer look at what’s planned through the Transform 66 Interactive Map.
What Neighbors Can Expect
The flyover ramp from I-66 West to Route 123 South is being demolished to make room for future Express Lanes ramps and shared-use path at the Route 123 Interchange. Nighttime demolition activity at this location finished on March 3. Remaining demolition activity is expected to occur during daytime hours.
The project team is taking steps to minimize demolition noise, but some loud noise is unavoidable. Project noise levels are monitored by VDOT during demolition activity.
Additional Traffic Pattern Change Beginning March 21, 2020
|Clearing activities begin||Spring 2018|
|Traffic pattern shifts begin||April 2019|
|Ramp and bridge work begin||Summer 2019|
|Demolition of ramp from I-66 West to Route 123 South||Winter 2019|
|Express lanes open||December 2022|
|Concept plans (I-66) - PDF, 13.7MB|
|Concept plans (Rt. 123) - PDF, 12.6MB|
|Cross sections - PDF, 16.9MB|
|Plan and profile - PDF, 36.4MB|
|Planned I-66 trails near Route 123 - PDF, 1.5MB|
|Upcoming traffic changes (April 2019) - PDF, 424KB|
|Upcoming traffic changes (July 2019) - PDF, 396KB|
|Construction Update Meeting on September 4, 2019 Flyer - PDF, 1.3MB|
|Route 123 (Chain Bridge Road) South Flyover Ramp Demolition - Jan, 2020, - PDF, 5.6MB|
|Traffic Pattern Changes for I-66 East to Route 123 North on Feb. 21 - Website|
|Traffic Changes at Route 123/I-66 Interchange Starting on or about March 21 - Website|