Route 29 (Lee Highway) Interchange in Centreville

The I-66 bridges over Route 29 (Lee Highway) in Centreville have been rebuilt as part of the Transform 66 Project. The new interchange design:
- Widens I-66 over Route 29 to create room for the 66 Express Lanes and future mass transit
- Widens Route 29 under I-66 for additional lanes to be added to Route 29 in the future
- Adds clearance to the Route 29 underpass for commercial vehicles
Get a closer look with through the Transform 66 Interactive Map.
Construction Update (Updated May 19, 2023)
Recent Construction Progress:
- I-66 traffic shifted to outside portion of roadway using new bridges over Route 29
- All old I-66 bridges over Route 29 have been demolished
- Ramp from Route 29 South to I-66 West reopened
- Ramps from Route 29 North and South to I-66 East reopened
Upcoming Construction Activities:
- Route 29 reconstruction under I-66

Aerial view of the Route 29 interchange. (April 2023)
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
- Route 29 will remain open during construction, but there will be numerous long-term and short-term ramp closures, traffic shifts, and other traffic pattern changes during construction.
- Drivers should expect additional changes as work progresses at the interchange. Sign up for project email updates to keep up to date.
Construction Update Meeting Held in November 2019
- On November 18, 2019, the Transform 66 Outside the Beltway Project Team held an update meeting on work and traffic changes in the Centreville area to include Route 28, Route 29, and E.C. Lawrence Park.
- Materials from the meeting can be found in the Resources section below.
Timeline
Anticipated Schedule |
Dates |
Ramp and bridge work begins
|
Fall 2019
|
Ramp from Route 29 South to I-66 West closes for about 18 months
|
October 28, 2019 - December 24, 2020
|
Partial bridge demolition
|
Winter 2019 |
Ramp from Route 29 North to I-66 East closes for about four months
|
January 9 - May 17, 2021
|
Various traffic shifts and ramp closures for construction and demolition |
2020 through 2022 |
Express Lanes opened |
November 2022 |
Resources
Concept plans (Cub Run) - PDF, 6MB |
Concept plans (Lee Highway/Route 29) - PDF, 6MB |
Centreville Area Construction Update Meeting Flyer - PDF, 6MB |
Centreville Area Construction Update Meeting Handout (November 18, 2019) - PDF, 1.5MB |
Centreville Area Construction Update Meeting Presentation (November 18, 2019) - PDF, 2.1MB |
Centreville Area Construction Update Meeting Boards (November 18, 2019) - PDF, 7.1MB |
Traffic Pattern Changes Planned for I-66/Route 29 Interchange in Centreville Starting on or About October 28 - Website |
Route 29 in Centreville Reduced to Two Lanes Under I-66 Next Weekend, December 13-16 - Website |
Flyer on Route 29 Centreville Bridge Demolition (December 2019) - PDF, 2MB |
Flyer on Route 29 Centreville Bridge Demolition (December 2020) - PDF, 6MB |