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Benefits of I-73 / I-74 / I-75: Connectivity

One key benefit to completing the I-73/74/75 corridor is enhanced connectivity within the U.S. transportation system.  Once complete, this corridor will greatly expand the transportation options inside and outside the corridor. 


This corridor will provide connection to numerous major highways and the following interstate highways:

  • Interstate 696
  • Interstate 475
  • Interstate 95
  • Interstate 94
  • Interstate 85
  • Interstate 81
  • Interstate 80
  • Interstate 79
  • Interstate 77
  • Interstate 71
  • Interstate 70
  • Interstate 69
  • Interstate 40


This corridor will provide unique access to warm-water and cold-water ports.  Both terminus points offer unparalleled access to major ports at each end of the corridor:

Northern Terminus: the northern terminus for this corridor is in the Michigan-Canadian border, near Sault Ste. Marie, MI.  The port at this terminus, the Soo Locks, allows ships to travel between Lake Superior and the lower Great Lakes.  The locks pass an average of 10,000 ships per year.  The U.S. Soo Locks form part of a 1.6-mile canal commonly known as St. Mary’s Falls Canal. 

Southern Terminus: the southern terminus, near Myrtle Beach, SC, is conveniently located within 75 miles of 3 active ports:  the Charleston (SC) Port; the Georgetown (SC) port; the Wilmington Port (NC).

Other ports:  various other ports offer convenient access to the corridor, including ports in North Carolina, Virginia, West Virginia, Ohio and Michigan. 


The corridor provides convenient access to modern railways, including Norfolk Southern Railway, CSX Transportation Railway, and Canadian National Railway.  Through the six-state corridor, I-73/74/75 connects with major rail lines in 36 locations.

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