Transportation Infrastructure of the United States 2017/2018
Figure

Notes:
Border crossings that intersect the National Highway System (NHS) are shown. Major ports are ports with a commodity tonnage total of 10 million or more, in 2015. Airports with at least 750,000 enplanements or more, in 2015, are included on the map. Roads (Interstates; Non interstate) are the National Highway System (NHS) network. Railroad network includes Class I rail, as of 2016. State capitals and cities with a population of 250,000 or more, in 2014, are shown.
Source:
U.S. Department of Transportation, Bureau of Transportation Statistics, National Transportation Atlas Database 2016. Natural Earth, Manual Shaded Relief of the Contiguous United States, 1:10 million; Manual Shaded Relief of the World, 1:50 million.