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Show I EXPERIENCE IN ROAD BUILDING 00 H Oregon has expended over $50,000,- H 000, in the pnst five years building I the first units of ono of the finest H highway systems in the United H States, H It has profited by the experience H of many other Btates from the stand- H point of laying pavement that rc- H quires n minimum of maintenance H cosk. H It has been able to profit by the H experience of tho other states which H havo laid many hundreds of miles of H rigid base pavement having no shock ' absorbing qualities and the surface H of which has not been protected by H a coating of some shock absorbing H substance. The burden of maintaining per-H per-H mnnent highways is emphasized by H the proposal of the Highway Com-H. Com-H. mission of California to raise an ad-It ad-It ditionnl $05,000,000 for "mainten- ', ance" of the roads throughout the H state. H Califarnia was a pioneer in road H building and constructed hundreds H' of miles of concrete highways which H in the experimental days of road H building seemed indcstructable. H The incessant jar of modern trnf-H trnf-H fie, however, on the unyielding con-H con-H v crcto road surface can eventually R have but ono result, namely crystals' crystal-s' lization of the concrete with its II subsequent disintegration. It Concrete is like cast iron, it will If stand for an indefinite period when it is not subject to the shock of roll ro-ll pcuted impact. To savo its concrete II "base road, California is finding it 1 1 -necessary to surface it with n top I J dressing of bituminous character 1" 'and1" thus relievo the concrete bas I? . iroin tho direct blows of traffic 1 1 impact. - r" -I' With this experience togroby, Ore-! It ' gon has confined its road construe-I" construe-I" tion almost entirely to pavements of I asphaltic character with a result I that it seems to have minimized its I maintenance cost I' The taxpayers are deeply intor-I intor-I ested in this question for in the Jong I -run they must foot the bill which a I permanent highway system involv-v " 'cs. |