Final Environmental Impact Statement. Mankato-North Mankato-Le Hillier Flood Control. Phase I (As Amended 18 January 1972). Final Supplement II-C

摘要

The St. Paul District is constructing flood control works (now largely complete) on the Manketo and Blue Earth Rivers to protect developed floodplain portions of Mankato, North Mankato, and Le Hillier from frequency flood damage. These flood control works include the raising of bridges to clear the high water of the standard project flood. Two Chicago and North Western Transportation Company railroad bridges over the Blue Earth River must be raised or replaced to an elevation approximately 8 feet above the existing bridges. Such a raise or replacement necessitates extensive work on the approaches to the bridges as well as the bridges themselves. Of the six plans considered, three were selected for detailed study. All plans would eliminate one bridge that is being used only for railroad car storage. All plans would relocate the main railroad track downstream immediately adjacent to the existing bridges. Alternative 2A would provide one stub-end storage track east of the river adjacent to and serving the Honeymead soybean processing plant. Additional storage would be necessary west of the river. Alternative 3B Modified would provide car storage on two stub-end tracks east of the river adjacent to the Honeymead plant. Alternative 3B Modified has been tentatively selected because it addresses the identified public concerns and has net positive contributions to the study objectives.