Show I GOOD j t HIGHWAYS I I GRADING AND PAVING ROADS Average ge Figures for fop Whole of United States Stales Given Out by Bureau of Public Roads Heads Prepared red by the tha United States Department Dep of Agriculture what part of or the tIle co cost t of a n road rond goes goc Into grading and structures that are e more or less permanent and Yh whit what part go goes s Into the paving paYing which may eventually wear out This question is answered 1 full fully by statistics compiled by the bureau of public roads of the United States Department Department Department De De- of Agriculture on 1350 competed com com- Meted 1 ald federal roads Involving 7 miles mites of road rond at a total cost of Of the total cost 21 per percent percent cent jent went Into grading 14 per cent Into structure 02 62 per cent Into paving paying pay pay- ing lug and find 3 per cent for engineering These are the average figures for the whole of the United States but there is 13 considerable variation In different In the Middle Atlantic states here grading Is not heavy and paving mist lust b be built for heavy traffic the lost ost of the time paving rises to 75 per cent md mail the grading and structures fall to 15 13 per cent and 9 D per cent respective respective- t ly iy In the Mountain states the em Is very different much of the york work being new construction with Heavy leavy grading and the hl highest hest type V y vY se u rr ic k M An Improved Road in the R Rocky ky M Moun Moun- un- un of tf surface Is not necessary In n this group of states the cost ClIst of grading amounted to 33 per cent structures 20 per cen cent and paving pa 42 per pel ce cent cent- t. t |