Show asphalt A top on gravel Is success in michigan an asphalt top Is being put on a considerable mileage ot of miles of well built billt gravel trunk highways some of the samo same work Is 1 being done in ohio where the base Is good and the traffic not heavy enough to tD warrant a paved road asphalt surfacing of gravel roads has proven satisfactory according to engineers tit the e asphalt balt top fop at least has lengthened tile the service of gravel roads and probably will carry then them over to such time as traffic justices ces pil pavement there are instances in michigan ot of roads ot of the type mentioned which are in fair condition after eight years use the trick of successful construction of the asphalt topped gravel road lg Is said to he in preserving the old compacted gravel intact hut but cleaning ott ot all tile the loose material and correcting the pro me with an all concrete bitse base |