Quinn Consulting Services, Inc. (QCS) provided Quality Assurance (QA) services on this approximately $58 million design-build project that widened Route 50 in Fairfax and Loudoun Counties between Route 742 (Poland Road) to Route 28 (Sully Road) from a four-lane divided highway to a six-lane divided highway. The project length was 3.7 miles and included mainline shared use paths, storm drainage, storm water management basins, right-of-way acquisition, utility relocations, reconstruction of intersections, bridge construction, waterline installation, blasting, box culverts, retaining walls, and traffic signal installations.
The project was constructed to relieve congestion on Route 50 by widening the road and improving signalization and turning lanes. In addition to relieving traffic congestion, the project provided a shared use path on both sides of the road and added pedestrian crosswalks, curb ramps, and pedestrian signals.
QCS provided the project Quality Assurance Manager (QAM), QA inspectors, and the QA laboratory for off-site materials testing. The QA team worked closely with the contractor’s quality control (QC) team to ensure that the project adhered to the project specific QA/QC Plan and the Minimum Requirements for QA and QC as set forth in the Virginia Department of Transportation (VDOT) Design-Build Manual.
Responsibilities of the QA team included:
- Scheduling and chairing activity preparatory meetings
- Performing the required QA inspection and testing
- Monitoring the performance and documentation of the QC team
- Reviewing and approving monthly pay estimates
- Developing project punch lists
- Addressing non-conforming items with contractor QC personnel.