Duluth Seaway Port Auth

Duluth Seaway Port Authority operates at the westernmost tip of Lake Superior, serving as North America’s farthest-inland freshwater seaport. The port features 49 miles of harbor frontage protected by a natural breakwater and includes twenty privately owned bulk cargo docks, an award-winning general cargo terminal, a marine fueling depot, a shipyard with dry docks, multiple tug and barge services, and an intermodal cargo terminal. As a diversified multimodal shipping hub, it offers global cargo transport through the Great Lakes-St. Lawrence Seaway, free-flowing major highways, and direct Class I rail service to the East, West, and Gulf Coast. The port has been operating for over 150 years and is ranked among top performers in Green Marine environmental reports. In 2026, it received a $27.5 million infrastructure grant from the U.S. Maritime Administration. Each year, more than 35 million