As an addendum to the two maps here showing freight tonnage by rail and water route, the U.S. Bureau of Transportation Statistics has a nice one that overlays r

As an addendum to the two maps here showing freight tonnage by rail and water route, the U.S. Bureau of Transportation Statistics has a nice one that overlays rail/water/truck tonnage on one map: http://www.rita.dot.gov/bts/sites/rita.dot.gov.bts/files/publications/transportation_in_the_united_states_2013/moving_goods.html http://www.rita.dot.gov/bts/sites/rita.dot.gov.bts/files/pub...