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Show BUILDM6 NO ONE ROAD TYPE IS BEST There li Buitahlo Kind of Hlnhway (or Traffic of Every Description , Many Considerations. Priirl by Ilia 'Jnltril Htuta licysrtmenl of A I I'.'lill Uf a ) No effort has been made to encour ii Ku the conntructloii of any particular particu-lar type of road In the federal-aid jiroJcclH adiiilnlhlered by the bureau of roads of the United States iJepart-mciit iJepart-mciit of Agriculture. The legal requirement re-quirement that the road.i hluill he "suhHtaiitlul In character" has not been Interpreted to mean that only the inoNt expensive types of roads should be built, it lias been recognized that the heavy and expensive construction which 1h necessary In New York, Massuchusetts und Pennsylvania la not suitable or warranted for the less exacting trnlllc of Nevudu, Idaho and the Dakota. There Is a suitable type of road for every type of trafllc. (Jranlte blocks are best around wharves and freight depots; country thoroughfares need to be better than rurul side roads, lightly trnveled. A number of other considerations have Influenced the choice of type In many cases. It Is frequently fre-quently found thnt suitable local materials ma-terials may cost less than better materials mate-rials Imported from a distance; approval ap-proval of the use of local materials If not Infrequently given for the purpose of encouraging local production. In purls of the I'ar West the entire absence ab-sence of water ulong a right of way, and the expense of keeping an adequate ade-quate supply, often make It necessary to approve the building of a type of construction that can be built without using lurpe quantities of water. The Initial decision as to the type of a particular road Is made by the Ftate highway department. The bureau of public roads makes Bn Independent study of the conditions. The most tultable type of road In the Judgment of the engineers of the State department depart-ment and of the bureau of public roods Is finally decided upon. The earth, Fand-clay and gravel road3 t , "t'lj t. V- V -'::' . - . V i"- ? - - ' i ,-, - : . v ' . 1 , - , .- .. i .- '- in-. v i r - r. ' - . . s .. . -: . I, :-- x-. "V r N ( Much Money It Needed to Cut a Highway High-way Through ths Mountains. which make up 66 per cent of the mileage, have cost only about one-fourth one-fourth of the federal-aid funds used, while the highest types, Including cement concrete, brick and bituminous concrete have called for 60 per cent of the money to build 24 per cent of the mileage. |