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About I-66 Corridor Improvements

Work is underway to transform Northern Virginia’s Interstate 66 into a multi-modal corridor that moves traffic and people quicker and in a more reliable way. VDOT and the Virginia Department of Rail and Public Transportation (DRPT) are actively evaluating improvements that would provide added capacity, and new options with more predictable travel times. Under the proposed plan, I-66 would be improved to provide:

  • Three regular lanes in each direction
  • Two express lanes in each direction
  • High-frequency bus service with predictable travel times
  • Direct access between the express lanes and new or expanded commuter lots

In July 2014, the team kicked off a year-and-a-half of environmental study and community involvement. By the end of 2016, the team is working to complete environmental work, identify funding sources, receive federal approval and begin construction in 2017.

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I-66 Corridor Improvements Area

The project area is a 25-mile stretch of I-66, from U.S. Route 15 in Haymarket to I-495/Capital Beltway.

Map of Region





Have Your Say

Public involvement and input are critical elements in the development and delivery of transportation projects. VDOT is providing an online discussion forum for comments and discussion related to the Transform 66 Outside the Beltway project. We welcome suggestions and comments. If you prefer to make a comment that is not visible on the discussion board, please email us at Transform66@VDOT.Virginia.gov or complete an online comment form.

Project Update

To request a meeting on Transform 66: Outside the Beltway for your community or service organization, please click here.



Project News


The Virginia Department of Transportation (VDOT) announced today that the I-66 Outside the Beltway project team, which includes the Virginia Department of Rail and Public Transportation (DRPT), is working together with Prince William County to implement a commuter parking lot in the vicinity of I-66 and U.S. Route 15 in Haymarket.

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