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    • Link Tonnages

    Metadata Updated: December 19, 2025

    The Link Tonnages dataset was sourced on December 31, 2023 and was updated on August 22, 2025 by the United States Army Corp of Engineers (USACE) and is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics (BTS) National Transportation Atlas Database (NTAD). The tonnage summarized for each link by commodity and direction (upbound and down bound). The commodities include Coal, Petroleum Products, Chemicals, Crude Materials, Manufactured Goods, Farm Products, Machinery, Waste, and Unknown. A data dictionary, or other source of attribute information, is accessible at https://doi.org/10.21949/xm0g-sr86

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date December 16, 2025
    Metadata Created Date September 30, 2024
    Metadata Updated Date December 19, 2025
    Reference Date(s) September 27, 2024 (creation), August 22, 2025 (revision)
    Frequency Of Update annually

    Metadata Source

    Harvested from National Transportation Atlas Database (NTAD) Metadata

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date December 16, 2025
    Metadata Created Date September 30, 2024
    Metadata Updated Date December 19, 2025
    Reference Date(s) September 27, 2024 (creation), August 22, 2025 (revision)
    Responsible Party United States Army Corp of Engineers (USACE) (Point of Contact)
    Contact Email
    Guid Link Tonnages
    Access Constraints Access Constraints: unrestricted
    Bbox East Long 180
    Bbox North Lat 72.1997322377216
    Bbox South Lat -55.9052329307874
    Bbox West Long -180
    Coupled Resource
    Frequency Of Update annually
    Harvest Object Id a03d2553-a274-4845-b78f-feb0e12dbad2
    Harvest Source Id ee45e034-47c1-4a61-a3ec-de75031e6865
    Harvest Source Title National Transportation Atlas Database (NTAD) Metadata
    Licence This NTAD dataset is a work of the United States government as defined in 17 U.S.C. § 101 and as such are not protected by any U.S. copyrights. This work is available for unrestricted public use.
    Lineage
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-180.0, -55.9052329307874], [180.0, -55.9052329307874], [180.0, 72.1997322377216], [-180.0, 72.1997322377216], [-180.0, -55.9052329307874]]]}
    Progress onGoing
    Spatial Data Service Type
    Spatial Reference System 3857
    Spatial Harvester True

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