The River Subdivision or River Sub is a railway line along the Mississippi River that runs approximately 124 miles (200 km) from Saint Paul Minnesota south to La Crescent. U.S. Highway 61 closely parallels the route between La Crescent and Red WingMN. The line is operated by the Canadian Pacific Railway. BNSF Railway operates a complementary St. Croix Subdivision which traces the eastern side of the river in Minnesota and Wisconsin.
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