Search results
Results from the WOW.Com Content Network
The first macadam road built in the United States was constructed between Hagerstown and Boonsboro, Maryland, and was named at the time Boonsborough Turnpike Road. This was the last section of unimproved road between Baltimore on the Chesapeake Bay to Wheeling on the Ohio River .
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.
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.
The first section of MD 161 to be improved was 1 mile (1.6 km) of macadam road from Shuresville Road in Darlington south to Price Road built by 1910. [3] Two sections of macadam road were constructed in 1928. One segment was constructed from Shuresville Road in Darlington north to US 1.
[3] [4] Another macadam segment was completed from Emmorton south to Singer Road at Norris Corner in 1928. [5] A concrete highway from Norris Corner toward US 40 in Edgewood, as well as a macadam road along Rock Spring Avenue from Bel Air to the community of Frogtown, which is the location of the Bel Air Bypass, was started in 1929. [6]
An intercity bus service (North American English) or intercity coach service (British English and Commonwealth English), also called a long-distance, express, over-the-road, commercial, long-haul, or highway bus or coach service, is a public transport service using coaches to carry passengers significant distances between different cities ...
During the early and mid-20th century, when town gas was produced, coal tar was a readily available byproduct and extensively used as the binder for road aggregates. The addition of coal tar to macadam roads led to the word "tarmac", which is now used in common parlance to refer to road-making materials. However, since the 1970s, when natural ...
[3] [4] The first sections of MD 84 proper, which was then named Uniontown Road, were built in 1924 and 1925; a short section of macadam road was constructed from old MD 75 to Roop Branch and concrete from there to Uniontown. [5] [6] Baust Church Road was improved to a modern highway around 1936 and designated MD 630 by 1939.