Why is there no infrastructure information associated with land port?
The port codes used in U.S. international trade statistics, including the North American Transborder Freight Data, currently represent U.S. Customs and Border Protection ports. U.S. Customs and Border Protection ports are defined in Schedule D, which is available at http://www.census.gov/foreign-trade/reference/codes/index.html#D. These port classifications correspond to CBP and port facilities rather than a specific piece of transportation infrastructure (such as a bridge or highway arterial). Therefore, for ports that has multiple bridges, such as Laredo, TX and Buffalo-Niagara Falls, NY, data at the bridge level cannot be reported from this dataset. The RITA/BTS is working to ensure that more detailed port geography is included in the port definitions for the new federal database, the International Trade Data System (ITDS) that is being developed and deployed over the next several years.
