2011. Lubkin, Samantha, Blades, Doug, United States. Federal Highway Administration, and United States. Bureau of Transportation Statistics. This point shapefile depicts the more than 600,000 of the United States' bridges located on public roads, including interstate highways, United Sta... United States. Bureau of Transportation Statistics.
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2013. United States. Bureau of Transportation Statistics. The ports are politically defined by port limits or Corps projects, excluding non-Corps projects not authorized for publication. The determination ... Research and Innovative Technology Administration/Bureau of Transportation Statistics.
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).
2011. United States. Bureau of Transportation Statistics and United States. Army. Corps of Engineers. Contains physical information on commercial facilities at the principal U.S. Coastal, Great Lakes and Inland Ports. The data consists of listings o... Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS).