Show GOOD ROADS nearly miles of the two and a halbmillion half million miles of public roads in the united states are of earth sand clay or gravel according to recent statistics gathered by the office of public roads and rural engineering of the U S department of agriculture roads of these materials are therefore of predominant importance in most communities of the country and probably will remain so for many years for this reason the office of public roads and rural engl engi neer ng has issued bissu d as department of agriculture Bulle a comprehensive discussion of the materials methods of construction and maintenance for the three types most roads are located originally a as earth ea rt h roads the bulletin points out in such location work the fact that the road eventually my may develop into info an all important highway should be kept constantly in mind and routes should be chosen which will not have to be radically changed perhaps at great expense at some future ti time me the tendency in many rural communities to locate all new roads i along land lines lims has been responsible ll 11 for much waste ed out the importance of grade drainage and width of roads aswell as the materials of which they are built is emphasize din in the publication and the machinery and tools used in constructing roads of the different materials are described the necessity for adequate maintenance is brought out and in this connection dily shows hi how ow far fai spent all thosa nations n ati ons are by the drain of the in mighty war there is no com erections ions are arc given for the tb i making and use of road drags typical specifications for fo the con st ruction eption of roads from earth sand clay cl ay and gravel are included in arx ty |