This report covers the key issues and challenges related to the maritime freight transportation system. These include current federal funding and grant programs; major legislation supporting the nation’s waterways; maritime and multimodal freight transportation collaborations; fundamental metrics—commodity flows, trends, and forecasts—for port and inland waterway performance; infrastructure needs; and workforce and environmental issues. Based on a survey of AASHTO member organizations, the report also highlights key state maritime programs and planning efforts. Developed by the AASHTO Council on Water Transportation, with support from the Special Committee on Freight, this report updates two previously released maritime freight reports: Waterborne Freight Transportation: Bottom Line Report (Item Code: WFT-1) and State of Freight II—Implementing the FAST Act and Beyond (Item Code: SOF-2).