Blowing snow and fog that occur periodically can cause severe visibility restrictions for drivers.On average, about 35 to 40 winter weather events hit Wisconsin each winter.Wisconsin average snowfall ranges from about 40 inches in the south to as much as 160 inches along the shores of Lake Superior.There are 113,000 miles of local streets and county and state highways in Wisconsin including 11,433 miles or 34,620 lane miles (one lane mile equals a one mile roadway that is 12 feet wide) of state maintained highways.(Interstates, federal and state numbered highways) The Wisconsin DOT contracts with all 72 county highway departments in the state to maintain the state highway system.Everything you've ever wanted to know about winter road maintenance in Wisconsin: Roadways
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