Historic Bridges of Southeast Minnesota - Hardcoverby Steven E. Gardiner (Author) Minnesota is often called the Land of 10,000 Lakes, but it could also be called the Land of 20,000 Bridges. During the early days of the state, the Mississippi River and its many tributaries barred and disrupted transportation and commerce. To span these obstacles, communities battled to build and maintain bridges. Their efforts created a variety of bridge designs and purposes from small hiking and biking bridges to