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Before it was macadamized, stagecoaches travelling the Hagerstown to Boonsboro road in the winter had taken 5 to 7 hours to cover the 10-mile (16 km) stretch. [ 13 ] [ 14 ] This road was completed in 1823, using McAdam's road techniques, except that the finished road was compacted with a cast iron roller instead of relying on road traffic for ...
John Loudon McAdam, 1830, National Gallery, London. John Loudon McAdam (23 September 1756 [1] – 26 November 1836) was a Scottish civil engineer and road-builder. He invented a new process, "macadamisation", for building roads with a smooth hard surface, using controlled materials of mixed particle size and predetermined structure, that would be more durable and less muddy than soil-based tracks.
Tarmacadam is a concrete road surfacing material made by combining tar and macadam (crushed stone and sand), patented by Welsh inventor Edgar Purnell Hooley in 1902. It is a more durable and dust-free enhancement of simple compacted stone macadam surfaces invented by Scottish engineer John Loudon McAdam in the early 19th century.
Pages in category "Historic trails and roads in Texas" The following 25 pages are in this category, out of 25 total. This list may not reflect recent changes .
A road of such material is called a "metalled road" in Britain, a "paved road" in Canada and the US, or a "sealed road" in parts of Canada, Australia and New Zealand. [ 48 ] A granular surface can be used with a traffic volume where the annual average daily traffic is 1,200 vehicles per day or less.
Tarmacadam, a mainly historical tar-based material for macadamising road surfaces, patented in 1902; Asphalt concrete, a macadamising material using asphalt instead of tar which has largely superseded tarmacadam; Tarmac colloquial term often applied to any paved surface of an airport, regardless of material, including the Airport apron; Taxiway ...
Unpaved roads with a harder surface made by the addition of material such as gravel and aggregate (stones), might be referred to as dirt roads in common usage but are distinguished as improved roads by highway engineers. Improved unpaved roads include gravel roads and macadamized roads. [citation needed]
Jourdanton-Poteet, replaced a proposed road from Jourdanton to US 81 south of San Antonio; extended to San Antonio in 1945; section from IH 35 to Loop 353 returned to San Antonio in 1964 SH 347: 1942 ← US 69 (part) now Port Arthur-Beaumont SH 348: 1943 1990 → FM 1765 (part) Texas City-La Marque; redesignated because it was an FM route SH 349