The Theodore Roosevelt Expressway (TRE) is the Northern third of the Ports to Plains Alliance. It runs from Rapid City, SD to Canada through the Port of Raymond in Montana. 

The TRE begins in Rapid City and flows through the cities of Spearfish, Belle Fourche, Bowman, Belfield, Watford City, Williston, Culbertson, Plentywood, and finally through the Port of Raymond into Canada.

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