Route 29 Interchange in Centreville

The I-66 bridges over Route 29 (Lee Highway) in Centreville are being demolished and rebuilt as part of the Transform 66 Project. The new interchange design will:

Widen I-66 over Route 29 to create room for Express Lanes and future mass transit
Widen Route 29 under I-66 for additional lanes to be added to Route 29 in the future
Add clearance to the Route 29 underpass for commercial vehicles

Get a closer look at what’s planned through the Transform 66 Interactive Map.

Construction Update (Updated September 7, 2021)

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
A temporary traffic pattern is in place on I-66 East between Route 29 in Centreville and Route 28 through October 2021. Drivers must stay to the right at the split to reach Route 28 North.

Upcoming Construction Activities:

Continue construction of new Express Lanes bridges over Route 29
Route 29 reconstruction under I-66

New bridge piers will support I-66 as it crosses over Route 29 in Centreville. (May 19, 2021)

Bridge beams are in place to carry the widened I-66 over Route 29 in the Centreville area. (August 24, 2021)

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 Nov. 2019

On Nov. 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 open	December 2022