Turnpikes & Toll Roads By: Amanda Murray
Who was John McAdam?
John McAdam was born in Ayr, Scotland, on September 21, 1756. It has been noted that McAdam traveled to the United States at 14 to live with his uncle after his father's death. Here he worked with his uncle at his counting house. When McAdam grew older he decided to return to Scotland, and with his return he began to experiment with road building. It is during this time that his experiments lead to the invention of "macadamizaton" and essentially, macadam. Invented around 1820, macadam, according to Britannica.com, is "composed of a compacted subgrade of crushed granite or greenstone designed to support the load, covered by a surface of light stone to absorb wear and tear and shed water to the drainage ditches." McAdam's invention instantly became popular for it improved the travel by road in the United States greatly. Following this invention, John McAdam died a few years later on November 26, 1836.
Turnpikes & Toll Roads
Invented by John McAdam
The looks of a turnpike in the 1800's so the road used for travel would be less of a muddy mess.
This is a picture of a turnpike in the completion process.