This $41M design-build project for the Virginia Department of Transportation reconstructed and widened the structurally deficient Route 7 bridge over Dulles Toll Road and the Airport Access Highway from four lanes to six lanes. Limited clearances within MWAA’s right-of-way required the design and installation of permanent foundations using micropiles to widen the existing bridge piers between Dulles Toll Road and the Dulles Access Highway. The project also included a 10’ wide shared-use path that will be built for pedestrians and bikes to travel in each direction. This path incorporates grade separated crossings, including two pedestrian bridges and three tunnels.
Quinn provided Quality Assurance Services for this project. Responsibilities included conducting preparatory inspection meetings prior to the start of each new activity; providing oversight and directing the independent quality assurance testing and inspections; reviewing daily QA, QC and testing reports, pay applications, Source of Materials for the project, maintaining Materials Notebook of the project, and ensuring all testing on the project is carried out according to the requirements of VDOT’s Minimum QA/QC for DB and P3 Projects Manual.
