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About the Project

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.

Route 29 Reduced to Two Lanes Under I-66, July 30 – August 2, for Continued Bridge Beam Installation

Continued bridge beam installation for the new I-66 bridges over Route 29 will require reducing Route 29 to a single travel lane in each direction starting at 9 p.m. Friday, July 30, continuing through 4 a.m. Monday, August 2. Two-way traffic will run on the northbound side of Route 29 beginning around 9 p.m. Friday through Saturday evening. The traffic pattern will switch around 6 p.m. Saturday, with two-way traffic running on the southbound side of Route 29 for the remainder of the weekend. Closures are needed for crews to safely lift bridge beams into place over Route 29. Work will be on-going throughout the weekend during both daytime and nighttime hours.  

During Friday and Saturday nights, flaggers will alternate a single lane of traffic in each direction. No left turns will be allowed on the ramps to and from I-66 during this time. Drivers should expect delays if traveling in this area and consider using alternate routes. This is a continuation of beam lift installation conducted the previous weekend, July 23-26.

Details include: 

From 9 p.m. Friday, July 30, through 4 a.m. Monday, August 2 
Route 29 North and South at I-66

  • Beginning around 9 p.m. Friday through 4 a.m. Monday, Route 29 will be reduced to a single travel lane in each direction.
  • Two-way traffic will run in the northbound lanes of Route 29 under I-66 from 9 p.m. Friday through around 6 p.m. Saturday.
  • Two-way traffic will run in the southbound lanes of Route 29 under I-66 from around 6 p.m. Saturday through 4 a.m. Monday.  
  • During the overnight hours Friday and Saturday from 10 p.m. to 8 a.m., flaggers will alternate a single lane of traffic in each direction in a one-lane section of Route 29. Drivers should expect periodic stoppages of up to 20 minutes.
  • All lanes reopen by 4 a.m. Monday, August 2.   

Ramp from I-66 West to Route 29 

  • No left turn to Route 29 North.
  • Drivers will be directed to turn right onto Route 29 South, stay to the left, and make a U-turn at O’Day Drive onto Route 29 North. 

Ramp from I-66 East to Route 29 

  • No left turn to Route 29 South.
  • Drivers will be directed to turn right on Route 29 North, stay to the left and continue to the intersection of Trinity Parkway/Machen Road. At the traffic signal, drivers will use the left-most left-turn lane to make a U-turn onto Route 29 South.  

Ramp from Route 29 North to I-66 East

  • The ramp from Route 29 North to I-66 East will be closed.
  • Drivers will be directed to continue farther north to the intersection of Trinity Parkway/Machen Road. At the traffic signal, drivers will use the left-most left-turn lane to make a U-turn onto Route 29 South, then stay to the right and follow signs to I-66 East. 
  • As an alternate route, drivers can continue farther north to Route 28 North, stay to the right, and follow signs to I-66 East. 

Ramp from Route 29 South to I-66 West

  • The ramp from Route 29 South to I-66 West will be closed.
  • Drivers will be directed to continue farther south, stay to the left and make a U-turn at O’Day Drive or Stone Road onto Route 29 North, and then follow signs to I-66 West. 

During overnight hours Friday, July 30, all lanes of Route 29 South in Centreville will be closed. Flaggers will alternate northbound and southbound traffic on the northbound side in a single lane under I-66 for bridge beam installation. Periodic stoppages will occur.

During daytime hours Saturday, July 31, all lanes of Route 29 South in Centreville will be closed with two-way traffic running in the northbound lanes of Route 29 under I-66.

During overnight hours Saturday, July 31, all lanes of Route 29 North in Centreville will be closed. Flaggers will alternate northbound and southbound traffic on the southbound side in a single lane under I-66 for bridge beam installation. Periodic stoppages will occur.

During daytime hours Sunday, Aug. 1, all lanes of Route 29 North in Centreville will be closed with two-way traffic running in the southbound lanes of Route 29 under I-66. 

Construction Update (Updated July 12, 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

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)

New piers and bridge abutments are being constructed in the center portion of I-66 over Route 29. Traffic has been shifted to the outer portions of I-66 to make room for this work(May 2, 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

Resources

Concept plans (Cub Run) - PDF, 6MB
Concept plans (Lee Hwy/Route 29) - PDF, 6MB
Centreville Area Construction Update Meeting Flyer - PDF, 6MB
Centreville Area Construction Update Meeting Handout (Nov. 18, 2019) - PDF, 1.5MB
Centreville Area Construction Update Meeting Presentation (Nov. 18, 2019) - PDF, 2.1MB
Centreville Area Construction Update Meeting Boards (Nov. 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, Dec. 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