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milestones in the hlstory of american highways
Federal Aid Road Act and Progress Thereunder
Bureau of Public Roads U S Department of Agriculture
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2d semester 50 per cent Agriculture American Automobile Association amount annual appointed appropriated approved approximately asphalt asphaltic concrete authorized Automobile Registration bituminous Bldg bond issue Bond Legislation brick Bros cement clay concrete road construction and maintenance contracts Convict Labor cost county commissioners county highway county roads ditches earth roads election exceed expended expenditure Federal aid fees feet fiscal grade gravel highway commission highway commissioner highway department highway engineer Highway Officials highway system horsepower inches June 30 legislature less levied macadam material ment mileage miles of road motor vehicles municipalities Park pavements paving Portland Cement pounds Province public roads road and bridge road construction Road Funds road improvement routes sand Secretary Secretary of Agriculture Secy South Dakota specific gravity specifications State-aid roads stone subgrade supervision surface tion tons town township traffic trucks trunk line vote Wiley and Sons York City