Map of construction project districts

Under Construction

I-66 Widening

From Route 15 in Haymarket to Route 29 in Gainesville

Area Maps

Project Photos

Project at a Glance

Begin Date
April 2014

Est Completion Date
August 2016

$73.5 million

Lengths and Limits
1.2 mi west of Rt. 15 to 1 mile east of Rt. 29 (approx. 4.8 miles)

Prince William

Northern Virginia

Christiana Briganti-Dunn, P.E.
Design-Build Manager
Jeffrey S. Austin (Shirley Contracting, LLC)
Project Manager
703-668-0288 ext. 25
Shirlene Cleveland, P.E.
Program Manager for Design Build Projects

Work began in April 2014. The additional left-turn lane on the ramp from westbound I-66 to Rt. 15 was completed in June.

About the Project

This project adds one HOV and one regular lane in each direction from Rt 29 in Gainesville to Rt 15 in Haymarket, improving traffic flow to and from Haymarket, western Prince William and eastern Fauquier counties. When complete in August 2016, drivers will have three regular lanes and one HOV lane in each direction for 25 miles, from I-495 to Route 15.

Other improvements include:

  • Adding a left-turn lane on the I-66 westbound ramp to Rt.15 (Completed June 2014)
  • Reconstructing overpasses at Catharpin Rd. and Old Carolina Rd./S. Jefferson St. with 10-foot shared-use paths
  • Intelligent Transportation System (ITS) components for managing traffic volume, improving flow and enhanced incident response
  • Overhead sign structures
  • Utility relocation
  • Storm drainage and storm water management facilities
  • Retaining walls, sound barriers, roadway lighting on the two overpasses
  • 12-foot paved shoulders

Preliminary Engineering $2.5 million
Right of Way $800,000
Construction $70.3 million
Total: $73.5 million

Design approval - 2011
Award Design-Build Contract - August 2013
Begin construction -  April 2014
Complete construction - August 2016

I-66 widening typical section




Jefferson St/Old Carolina Rd bridge demolition meeting presentation (August 12, 2014)
"Pardon our Dust"
meeting presentation (May 8, 2014)
Draft environmental document (Categorial Exclusion)
Air quality analysis report
Noise analysis report , noise abatement design report and soundwall treatment samples 
Cultural resources survey report  
    Appendix A | B | C | D

Public hearing brochure (July 2011) and comments summary and responses
Project plan sheets (5MB)

State Project Number: 0066-076-003, P101, RW201, C501, B674, B675 Federal Project Number: NH-5A01(194)  
UPC: 93577

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Page last modified: March 20, 2015