The US Interstate Highway System: 40 Year Reporthttp://www.publicpurpose.com/freeway1.htm
Virginia 50 1,800 0.98 Wisconsin 60 1,900 0.42 Wyoming 60 1,900 4.72 United States 6,100 187,400 0.86 *Population is weighted 40 year average Note: Alaska has no designated inters
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