U.S. Highway 12 once crossed the St. Croix River on a toll bridge between Wisconsin and Minnesota, which provided revenue for the town. With the construction of Interstate 94, the toll bridge was removed, though the long causeway extending to the former bridge location is now open to the public as a pedestrian walkway, known as “The Dike”.- Hudson is a city and county seat of St. Croix County, Wisconsin, United States. As of the 2020 United States census, its population was 14,755. It is part of the Minneapolis–St. Paul Metropolitan Statistical Area (MSA). The village of North Hudson is directly north of Hudson.