National I-73/I-74/I-75 Association

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Welcome to the official website for the National I-73/I-74/I-75 Corridor Association! Interstate 73/74/75 is gaining support everyday, and we’re excited to be part of a project that will change lives and save lives.

Interstate 73/74/75 will bring progress and growth to all six states along the corridor: Michigan, Ohio, West Virginia, Virginia, North Carolina, and South Carolina. It will also serve as a safe alternative to other highways, and provide coastal regions with a hurricane evacuation route.

Economic and
Evacuation
Studies
Click here for details

Review of
I‐73 & Grand Strand Expressway
Alternative Economic Studies

Click here for PDF

Click here to learn more
about I-73 in South Carolina


I73/i74/I75 map