Map of construction project districts


I-66 Corridor Improvements

Potential Multimodal Improvements in Prince William, Fairfax

Project at a Glance

Lengths and Limits
I-495 in Fairfax to
Rt. 15 in Haymarket

Fairfax and Prince William

Northern Virginia

Susan Shaw, P.E.
Tier 2 Study Manager

Angel Deem
Tier 1 EIS Manager

Learn more about strategies being considered to transform 25 miles of I-66 from the Beltway to Haymarket into a multi-modal facility that moves traffic and people more efficiently.

Meetings in Fairfax and Prince William will: 

• Explain the Record of Decision on the Tier 1 EIS issued by the Federal Highway Administration in November
• Explain next steps as one or more improvement concepts are considered in Tier 2 environmental study(ies)
• Share private sector ideas, innovative approaches, and suggestions received in November from the Request for Information (RFI) by the Office of Transportation Public-Private Partnerships

Thursday, Jan. 30, 2014, 6:30-8:30 p.m.
Oakton High School, 2900 Sutton Road, Vienna, VA 22181
(If cancelled for weather: Tues., Feb. 4, 2014)

Wednesday, Feb. 5, 2014, 6:30-8:30 p.m. (postponed from Jan. 22 due to weather)
Wyndham Garden Hotel, 10800 Vandor Lane, Manassas, VA 20109

Review the display boards and comment sheet. E-mail comments or mail them to Ms. Susan Shaw, PE., 4975 Alliance Drive, Fairfax, VA 22030 by Feb. 17, 2014. 

Tier 1 Environmental Impact Statement

Began: Summer 2011
Completed: November 2013

The Tier 1 EIS studied potential multimodal improvements that could address existing and future transportation needs in the I-66 corridor from the Beltway in Fairfax to Route 15 in Haymarket. The study was developed by VDOT, the Federal Highway Administration, and the Virginia Department of Rail and Public Transportation. 

A Tier 1 EIS differs from a traditional EIS in that it focuses on broad issues such as purpose and need, travel modes (bus, carpool, rail transit, car, etc.), technology choices, and the general locatio of proposed improvements.

Public meetings were held in June 2011 and January and February 2012 to help gather input for the study's purpose and need statement. Public hearings in March 2013 focused on the Tier 1 Draft EIS, which entailed extensive traffic forecasting, analysis of how transportation modes work in combination with others, and evaluations of possible impact on natural and human environments.

During the Tier 1 process, VDOT and the Department of Rail and Public Transportation (DRPT) identified ten concepts that would increase capacity, provide multi-modal options, improve individual interchanges, and address safety and operations.

Tier 2 Environmental Study

Begins: 2014 (TBA)

The Tier 2 environmental study or studies will consider one or more improvement concepts from the Tier 1 EIS and focus on site-specific details for the selected concept(s), including impacts, cost and mitigation.

Request for Information

In November 2013, private sector ideas, innovative approaches, and suggestions were received from a Request for Information (RFI) by the Office of Transportation Public-Private Partnerships. View all of the submissions (19 from private sector firms/consortiums and nine from citizens) on the OTP3 website here. For more information on the RFI visit

Other I-66 Projects

Other projects along the I-66 corridor in northern Virginia include an active traffic management system, a new Bus and HOV access ramp at Vienna Metro, widening from Gainesville to Haymarket, a new auxiliary lane inside the Beltway, and improvements at the Route 15 and 28 interchanges. See all VDOT projects along the I-66 corridor in Virginia.


Stay Informed and Participate
VDOT and its partners will continue to hold public information meetings, receive comments and update online resources. Stay updated on all efforts to improve the I-66 corridor:

Follow information on the RFI at
See all VDOT projects along the I-66 corridor in Virginia.

Tier 1 Final Environmental Impact Statement and Record of Decision (12 MB) Nov. 20, 2013
Tier 1 Draft Environmental Impact Statement (EIS) (9 MB) Feb. 2013
EIS Transportation Technical Report Feb. 2013

Meeting Materials
January 2014 - Public info meeting display boards and comment sheet
March 2013 - Public hearing presentation, brochure, and display boards (14 MB)
January/February 2012 - Public info meeting
presentation, newsletter, display boards, and comments summary
June 2011 - Public info meeting presentation,
handout, and display boards (18 MB)

Cooperating and participating agencies meetings - March 2012,  November 2011
Agency scoping meeting -
June 2011

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Page last modified: April 18, 2014