Route 29 Interchange in Centreville

The I-66 bridges over Route 29 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.

Workers install cross framing on new bridge beams over southbound Route 29 on Sunday, Aug. 30.

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.
The loop ramp from Route 29 South to I-66 West closed for about 18 months beginning Oct. 28, 2019. The ramp will be rebuilt to fit the new I-66 bridges. Southbound Route 29 traffic will temporarily use two left turn lanes to access I-66 West. Learn more.
Drivers should consider alternate routes when possible.
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 on Nov. 18

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	Oct. 28, 2019
Partial bridge demolition	Winter 2019
Ramp from Route 29 North to I-66 East closes for about four months	January - May 2020 (Will repeat later in project)
Various traffic shifts and ramp closures for construction and demolition	2020 through 2022
Express lanes open	December 2022