Today’s Birthday: JOHN LOUDON MCADAM (1756)

John Loudon McAdam (1756)

McAdam was a Scottish engineer who invented a process called “macadamization.” After noting the poor condition of the highways near his estate, he recommended that roads be raised above the adjacent ground for good drainage and then covered, first with large stones then with small stones, and bound with fine gravel. It was perhaps the greatest advance in road construction since Roman times and became known as “tarmac,” short for “tarmacadam.” What was the first macadam road in North AmericaMore… Discuss

 

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