John Loudon McAdam (1756-1836), The 'macadamiser' of roads
Sitter in 3 portraits
The civil engineer and road surveyor McAdam invented a road surface which revolutionised road building and travel. In 1811 he reported the terrible condition of Britain's roads to Parliament and proposed a solution. His technique of draining and laying down roads made of successive layers of small broken stones, naturally compacted by traffic, became known as 'Macadamisation'. It was widely adopted and, by improving coaching times, it played a key part in Britain's development as an industrial and commercial nation.
by Unknown artist
oil on canvas, circa 1830
On display in Room 19 at the National Portrait Gallery
NPG 3686
by Charles Turner, after Unknown artist
mezzotint, published 1825
NPG D5165
by Charles Turner, after Unknown artist
mezzotint, published 1825
NPG D5166
Building and Heavy Engineering
Groups
The Industrial Revolution
Places
Bristol
Hertfordshire
South Ayrshire





