In 2006, NCDOT and SCDOT completed a
feasibility study to look at the project area for potential opportunities, impacts and challenges, as well as to get public input and to develop cost estimates for the project.
Conceptual alternative routes were developed as part of the feasibility study, but detailed environmental and engineering investigations were not performed. The project study area has been expanded as part of the current environmental study. As the project develops, the development of additional corridors and changes to the conceptual corridors presented in the feasibility study are likely.
In 2016, Horry County passed a capital projects sales tax referendum allocating $125 million for the portion of the project in South Carolina. In North Carolina, $4.1 million has been allocated for planning and design.