2011. United States. Bureau of Transportation Statistics and United States. Federal Highway Administration. The Federal Highway Administration (FHWA) has the responsibility to assure that adequate highway transportation information is available to support... Federal Highway Administration (FHWA).
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2008. FHWA. National Bridge Inventory is a point theme representing bridges in the United States.
The NBI is a collection of information (database) covering t... Federal Highway Administration (FHWA).
2011. United States. Bureau of Transportation Statistics and United States. Federal Highway Administration. The NBI is a collection of information (database) describing the more than 600,000 of the Nation's bridges located on public roads, including Inter... Federal Highway Administration (FHWA).
2008. FHWA. The National Highway Planning Network is a line theme representing the major highway system in the United States. It consists of the nation's high... Federal Highway Administration (FHWA).
2013. United States. Bureau of Transportation Statistics and United States. Federal Highway Administration. The National Highway Planning Network is a comprehensive network database of the nation's major highway system. It consists of the nation's highway... Federal Highway Administration (FHWA).
2008. FHWA. National Highway Planning Network Points is a point theme representing nodes in the major highway system of the United States. It consists of the ... Federal Highway Administration (FHWA).