County_state_aid_highways
County roads in Minnesota are roads locally maintained by county highway departments in Minnesota. County roads span a wide variety of road types, varying from A-minor arterials that carry large volumes of traffic to gravel roads.
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Most county roads in Minnesota are designated with numbers that are unique within each county. Although most counties designate with only numbers, a few in Dodge County use letters instead, and two in Isanti County use a combination of a number and letter.