To expand highway capacity in this heavily congested corridor, this design-build, public-private project extended the HOV system and added new entry and exit points to create a seamless connection to 495 express lanes, Tysons Corner and Dulles Airport. There were four segments of the project:
Segment 1 (8.3-miles) – Garrisonville Road to Dumfries Road, two-lane reversible section on new location (seven new bridges, inclusive of two flyovers and northbound slip ramp
Segment 2 (7-miles) – Dumfries Road to Prince William Parkway, maintained geometry of existing roadway.
Segment 3 (11.9-miles) – Prince William Parkway to
I-495, addition of third lane.
Segment 4 (2.2-miles) – I-495 to North of Edsall Road, addition of third lane.
The Quinn team included a lead inspector and a quality assurance manager (QAM) to implement and maintain the Quality Management System (QMS) throughout the project. The QAM supervised and advised a team of QA inspectors and technicians responsible for monitoring and verifying the quality control process. Any non-conforming work was reviewed with the Design-Build team to develop corrective actions.
