"Encyclopedia Dubuque is the online authority for all things Dubuque, written by the people who know the city best.”
Marshall Cohen—researcher and producer, CNN
Affiliated with the Local History Network of the State Historical Society of Iowa, and the Iowa Museum Association.
The macadam method spread quickly. In the 1830s the first macadam road in North America, the National Road, was completed and most of the main roads in Europe were macadamized by the end of the nineteenth century.
Macadam roads were the forerunners of the bitumen-based binding that was to become tarmacadam. The word tarmacadam was shortened to the now familiar tarmac. The first tarmac road to be laid was in Paris in 1854.