This $17 Million project featured an overpass carrying Sycolin Road over the Route 7/15 Bypass in Leesburg. This .39-mile project eliminated the old traffic signal and former turn lanes from the Route 7/15 Bypass to Sycolin Road and from Sycolin Road to the Bypass, removing direct access between the two roads.
Construction of the Design-Build project included two northbound and two southbound 12-foot travel lanes, a sidewalk adjacent to the southbound lanes, and a barrier separated bicycle/pedestrian path along the northbound lanes. Retaining walls were constructed along the alignment of Sycolin Road and guardrail and concrete barrier were added to the bypass. An existing concrete box culvert was removed and replaced with a triple box culvert to accommodate the overpass. The utilities impacted along Sycolin Road were: Town of Leesburg water and sanitary sewer lines, Washington Gas lines, Verizon underground fiber optic cables and Dominion Virginia Power facilities. Noise barriers were constructed along both outside shoulders of the Bypass west of the new bridge.
Quinn provided a Quality Assurance Manager (QAM), Office Engineer, Senior Bridge QA Inspector and Materials Testing Technicians. Quinn’s involvement in the Engineering Services for this project included monitoring the Project Quality Assurance Process. Quinn supplied the full-time QAM for oversight of the QA staff, providing independent verification of the Contractor’s Quality Control Processes. Similar responsibilities included coordination of QA/QC testing and inspection requirements per the applicable Owner Contract Specifications, Special Provisions, and the testing and inspection rates specified in VDOT’s Minimum Requirements for Quality Assurance and Quality Control on Design-Build and Public-Private Transportation Act Projects (Minimum Requirements) and the project-specific QA/QC Plan. The QAM was also responsible for documenting the Project Nonconformance Process through issuance of Deficiency Notices for work recognized as “insufficient” to be removed and replaced. Non-Conformance Reports for similar type work with the expectation to be modified in-place or used as-is. These reports were issued and closed out by the QAM, or designated representative, through final verification of the finished work product.
Shop drawing reviews for as-built drawings were performed on a regular basis by the QAM and/or designated senior QA staff member relating to subcontractor’s submittals. All final “red-line” drawings were documented in Projectwise.
The QAM, with assistance from full-time QA Inspectors, verified work progress performed monthly for pay application purposes. Quinn also provided senior Quality Assurance Manager, Office Engineer, and Material Testing Technicians to ensure all QA requirements were met per the Design-Build Manual and worked closely with QC staff and contractors to ensure all phases of construction were monitored and inspected per specifications. Extensive public relations were utilized by all staff for the residential neighborhoods that were affected by construction.
