America's highways, 1776-1976Department of Transportation, Federal Highway Administration, 1977 |
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AASHO AASHO Road Test agencies Agriculture Alaska Highway apportionment approved authorized automobile became bill bond financing bonds bridges built Bureau of Public cities Committee completed concrete Congress cooperation cost counties early economic established estimate Federal funds Federal Highway Administration Federal-Aid Highway Act Federal-aid system FHWA financing fiscal grade highway construction highway departments highway engineers highway needs Highway Officials highway planning Highway Research highway system improvement included increased Inter-American Highway Interstate System land legislation MacDonald maintenance ment mileage miles million motor vehicle National Park Office of Public operation Parkway pavement Pennsylvania Turnpike percent problems projects PUBLIC ROADS ANNUAL railroads result revenue right-of-way River ROADS ANNUAL REPORT routes rural roads safety Secretary speed standards Stat studies superelevation surface surveys tion toll roads traffic trucks Turnpike United urban areas Washington World War II