National Academies report finds US interstate highways need major overhaul; calls for 20-year blueprint for action
Green Car Congress
DECEMBER 9, 2018
Estimated spending needs for Interstate highway renewal and modernization over the next 20 years. To renew and modernize these highways over the next 20 years, $45 billion to $70 billion will be required annually, depending on uncertainties, such as the rate of growth of vehicle miles traveled. National Academy of Sciences.
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