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Minnesota Department of Transportation
There are three commonly used culvert types in Minnesota: concrete, corrugated steel pipe (CSP) and plastic. The latter is relatively newer. Therefore, Minnesota local agencies requested more insight on how to select a culvert type.

A literature search was conducted, and although there are several technical resources, most of them focused on design vs culvert selection. This report summarizes three areas to assist with culvert selection:

• A summary of culvert use/experience by Minnesota local agencies,
• input from industry representatives providing recommended use, and
• a list of resources and design guides for each culvert type.

The intent of this synthesis is NOT to provide recommendations, but to provide Minnesota cities and counties information, including links to resources, so that an agency can make their own decision on which culvert type is best for their context.
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