The I-485/I-85 design-build finance procurement was an innovative undertaking for the North Carolina Department of Transportation, one that helped shape the way Alternative Technical Concepts or "ATC's" are proposed and evaluated for NCDOT projects. An innovative "turbine" interchange was proposed by the team of Lane/STV and was implemented into the project, with considerable cost savings and enhanced constructability. The project was opened to traffic in 2015 with savings of over $32 million.
Development of innovative Alternative Technical Concepts (ATC’s)
Schedule risk associated with introduction of ATC’s
Project enhancements (reduced earthwork and construction hauling, improved safety, flatter roadway profiles, etc.)