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    • National Tunnel Inventory (NTI)

    Metadata Updated: May 8, 2024

    The NTI is an aggregation of structure inventory and appraisal data of tunnels located on public roads submitted by States, Federal agencies and Tribal governments in accordance with the National Tunnel Inspection Standards (NTIS) which requires each State prepare and maintain an inventory of all tunnels. The NTI data is used as a data source to assist in the oversight of the National Tunnel Inspection Program and to respond to inquiries from different entities on the Nation’s tunnels.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date July 22, 2022
    Metadata Updated Date May 8, 2024

    Metadata Source

    Harvested from DOT Socrata Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date July 22, 2022
    Metadata Updated Date May 8, 2024
    Publisher Federal Highway Administration
    Maintainer
    Identifier https://data.transportation.gov/api/views/euv9-yzr3
    Data First Published 2022-06-23
    Language en-US
    Data Last Modified 2024-05-08
    Category National Geospatial Data Asset Transportation
    Public Access Level public
    Bureau Code 021:15
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.transportation.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Data Standard https://www.fhwa.dot.gov/bridge/inspection/tunnel/snti/hif15006.pdf
    Data Dictionary https://www.fhwa.dot.gov/bridge/inspection/tunnel/snti/hif15006.pdf
    Data Dictionary Type application/pdf
    Harvest Object Id c8b33a57-01b1-4b13-bea6-31c387d075d5
    Harvest Source Id a776e4b7-8221-443c-85ed-c5ee5db0c360
    Harvest Source Title DOT Socrata Data.json
    Homepage URL https://www.fhwa.dot.gov/bridge/inspection/tunnel/inventory.cfm
    License https://www.usa.gov/government-works
    Old Spatial United States
    Program Code 021:009
    Source Datajson Identifier True
    Source Hash 126e5652ea3d6fc7a9506a8fb18b20c2a861fd8ee8149d536b2b9317f5cc198a
    Source Schema Version 1.1
    Spatial {"type":"Polygon","coordinates":-124.733253,24.544245,-124.733253,49.388611,-66.954811,49.388611,-66.954811,24.544245,-124.733253,24.544245}

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