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Coming Soon

Route 1/123 Interchange

Separating and widening Jefferson Davis Highway and Gordon Boulevard in Prince William County

Area Maps

Project at a Glance

Begin Date

Prince William

Northern Virginia

W. Calvin Britt, P.E.
Project Manager

About the Project

The intersections along Route 1 at Route 123 and Occoquan Road operate at capacity during peak periods, and are expected to operate at unacceptable levels in the future. This project will widen both Routes 1 and 123, build Route 123 over Route 1 and the CSXT railroad, and make several other intersection improvements to significantly improve traffic flow. 

Route 1 will be widened from four to six lanes between Mary's Way and the Occoquan River. Route 123 will also be widened from four to six lanes from the Route 1 interchange to just east of the I-95 interchange. 

The new interchange will build Route 123 over Route 1 to separate through traffic, and connect Route 123 to Belmont Bay Drive east of the railroad. Express Drive will also be raised to connect to the new Route 123/Belmont Bay Drive. The project will eliminate two signalized intersections on Route 1 at Route 123 and Annapolis Way. The signal at Route 1 and Occoquan Road will remain and traffic operations will be improved by adding additional through and turn lanes on both roads.

These improvements will allow Routes 1 and 123 to operate at acceptable service levels through 2036.

The proposed project also provides enhanced access to the Woodbridge VRE/Amtrak Station for vehicles, bikes and pedestrians during the project's first phase. It also constructs an important segment of the Potomac Heritage National Scenic Trail from the intersection at Route 123 and Annapolis Way to the Belmont Bay community.

Route 1 currently carries approximately 35,000 vehicles per day and Route 123 carries about 21,000 vehicles per day. Projected volumes for 2036 are 75,000 vehicles per day on Route 1 and 36,000 on Route 123.

Project Features

Some of the project's features include: 

  • Raised grass medians on Route 1 between Mary’s Way and the Occoquan River, and on Route 123 over Route 1 to Belmont Bay Drive
  • A new Route 1 bridge at Marumsco Creek
  • A ten-foot shared-use path and a six-foot sidewalk on both Routes 1 and Route 123 
  • Utilities along the Route 1 corridor will be placed underground.

Route 1 intersection at Occoquan Road/Dawson Beach Road will be improved by:

  • Additional thru lanes on Route 1
  • Double left turn lanes on northbound Route 1 to Occoquan Road
  • Eliminating southbound Route 1 left turns to Dawson Beach Road
  • Additional turn lanes on Occoquan Road
  • Limiting westbound Dawson Beach Road to right-turn only onto northbound Route 1

Typical Section

Project Schedule

2011 - Public hearing held
2012 - Begin right-of-way acquisition
2014 - Begin utility relocation
2015 - Phase 1 construction - widen Route 1
2016 - Phase 2 construction - Interchange: completion schedule to be determined (pending funding)

VDOT’s current plans are to build the project in phases. The first phase would widen Route 1 and make improvements to Occoquan Road, with construction scheduled for 2015. The remaining Route 123 improvements and proposed interchange would be constructed when additional funding has been identified.


Design Alternative A - Dawson Beach Road full access at Route 1
Design Alternative B - Dawson Beach Road partial access at Route 1 (preferred) (6MB)
Construction Plans for Phase 1 (6MB)
Typical Section Renderings
Public Hearing Brochure (March 2011)
Public Hearing Comments and Resolution

Prince William Board of County Supervisors Resolution (Dec. 2013)


Environmental documents:
Environmental Assessment
Environmental Assessment Reevaluation
Finding of de minimus impact

State Project: 0123-076-F29, PE-101
Federal Project: STP-111-1(114)

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Page last modified: Aug. 18, 2014