Issue 24 | May 2021
Along about seven miles of Route 7, we're adding a third lane and shared-use paths in each direction, building a pedestrian underpass to access Colvin Run Mill Park, replacing and raising the bridge over Difficult Run, and making many intersection, bicycle and pedestrian improvements. Learn more.
Construction and Design Updates
In April, crews continued construction activities along the corridor:

Area 1 West: Reston Avenue to Baron Cameron Avenue:
  • Completed noise barrier panel installation between Reston Avenue and Utterback Store Road.
  • Installed permanent signal poles at Reston Parkway and Utterback Store Road.
  • Completed construction of the curb along westbound Route 7 between Reston Parkway and Utterback Store Road.
  • Storm sewer installation and earth-moving activities continued between Reston Avenue and Baron Cameron Avenue.
  • Placed cement-treated aggregate and base asphalt between Amanda Drive and Baron Cameron Avenue.

Area 1 East: Baron Cameron Avenue to Colvin Forest Drive:
  • Completed testing of the relocated segment of the Fairfax County Water Authority's 54" water main on the east side of Colvin Forest Drive along eastbound Route 7.  

  • Stage 2 construction pending right-of-way acquisition.

  • Activated the new Colvin Run stream channel.
  • Began excavation for the retaining wall between eastbound Route 7 and the Colvin Run stream channel.  
  • Completed the installation of the concrete footings, arch sections and wingwalls for the south half of the pedestrian tunnel. 

  • Placed cement-treated aggregate and base asphalt, followed by underdrain installation and curb stone placement along westbound Route 7 between Middleton Ridge Road and Trotting Horse Lane.
  • Began grading along westbound Route 7 between Trotting Horse Lane and Forestville Drive.
  • Completed the water main relocation between Beulah Road and Towlston Road.
  • Placed cement-treated aggregate and base asphalt along eastbound Route 7 between Old Ash Grove and Jarrett Valley Drive.

Third-party utility design and relocation activities are also ongoing.  

Click here to learn more on the design and construction schedule, environmental efforts, right of way, noise walls and other project details.

The new pedestrian tunnel at Colvin Run Mill Park is under construction.

Crews prepare a segment of the 54" water line for installation.
In Case You Missed It
The speed limit on Towlston Road between Route 7 and Bellview Road has been reduced to 25 mph.

Construction activities along Route 7 will be ongoing through the spring and summer months, and additional traffic changes will occur. Please see the project website for information on upcoming lane shifts and other roadway impacts.

As a reminder, please refrain from walking through work areas with equipment, materials and ongoing construction activities. If you have questions regarding work areas, please contact us at or 833-777-7411.

Click here for the latest updates on the Washington Gas work that is ongoing along Route 7. For more information on the Washington Gas work, please contact Jeff Hicks,
Thanks for Giving Our Crews S P A C E

Our crews are continuing to practice social distancing. If you have questions or concerns about the construction, please give them the space they need to work, and call or email us instead of approaching the work site.


Need to Know More?
You can check out photos and project progress on our website at Click News & Updates.

Planned lane closures for the following week are posted each Friday.
Sign Up for Traffic Alerts on Virginia 511
Don't forget you can get the latest on work zones, accidents and other incidents by visiting, using the Virginia 511 app, or by calling 511 from any phone in Virginia. Visit the site or app to create and configure your account for alerts.

You can also check out updates for major incidents @511northernvirginia on Twitter.
Call: 833-777-7411