Notes:

Highway flows depicted in the map are based on the Freight Analysis Framework data for 2015. Waterway and port tonnages are based on data for 2017, and rail is based on 2016 data. 1 short ton = 2,000 lbs.

Source:

Highway: U.S. Department of Transportation (USDOT), Bureau of Transportation Statistics and Federal Highway Administration, Freight Analysis Framework, version 4.5, 2019. Rail: USDOT, Federal Railroad Administration, 2019. Inland Waterways: U.S. Army Corps of Engineers, Institute of Water Resources, Annual Vessel Operating Activity and Lock Performance Monitoring System data, 2018.