Show PLANNING FOR BETTER ROADS method of construction must bo be put in operation which will produce more durable highways Water bound macadam roads roada which for practically a century have been adequate for or the traffic have now under tho the now new conditions become obsolete and their further construction means a serious waste ot of public publia funds la Is the opinion of former president lewis R speare 0 ot f the tha american automobile association macadam may answer for side roads and cross roads where thoro there la is attle travel to wear the surface into dusts dust and few fast moving vehicles to throw tho the dust duat into the air ir to bo blown away dut but tor for main roads anywhere and everywhere a method of construction must be put in operation which will produce durable roads wherever it 16 can bo be used concrete con creto makes a most excellent road or A toad road base for some other kind of surface the state of california has baa adopted concrete con croto construction for practically tta its entire system ot of state highways after a most anost thorough investigation voett vesti gatton gation wayne county michigan has haa been beba building concrete roads roada for the past five years and they have given most excellent satisfaction before the wayno wayne county authorities alea had bad learned by experience how bow to build concrete roads loads with expansion joints to prevent the concrete from cracking in cold weather and buckling in the hot sun eun several miles of 0 roads roada were wera built which broke into frequent cracks to repair these fc racked sections of road they poured tot hot bituminous material into the cracks and covered them with sand ehte has worn to the level ot of the tha concrete and the whole forms a most delightfully smooth road to travel over and one which looks as it it would stand for a generation at least in some sections of the country the concrete la is being used as a base and two or three inches of broken stone atone mixed with bituminous materials put Us A 1 ite jp 0 p i h fsr 41 good road crown maintained by dragging in alexandria county virginia on for a surface it if properly built this kind of 0 road should be very durable and should justify the additional expense the concrete will furnish the strength required to hold up the loads which are constantly growing heavier while the surface will prevent the creation of dust making tho the road pleasant to travel over the only proper wa way y to figure on the cost coet of a road Is to consider both the original cost and the expense of maintenance tor for a period of ten or fifteen years under pre present preterit Berit conditions of travel a macadam road would have to bo be resurfaced every two or three years and would be in bad condition two thirds of the time the aggregate cost would be tar far greater than that ot of a concrete road with a bituminous surface and the latter would present a good road all the time |