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    • Road Length by Measured Pavement Roughness, 2000-2024 (HM-64)

    Metadata Updated: March 27, 2026

    Annual road length by measured pavement roughness using the IRI (International Roughness Index) by functional class for the 50 states, DC, and PR from the Highway Statistics Series table HM-64. Note: Missing 2010 and 2021,

    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 March 20, 2026
    Metadata Updated Date March 27, 2026

    Metadata Source

    Harvested from DOT Socrata Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 20, 2026
    Metadata Updated Date March 27, 2026
    Publisher Federal Highway Administration
    Maintainer
    Identifier https://data.transportation.gov/api/views/26bt-cq5y
    Data First Published 2025-07-29
    Language en-US
    Data Last Modified 2026-03-26
    Category 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 Quality True
    Harvest Object Id e6f73119-f5c6-4935-81af-96075b9c3d5b
    Harvest Source Id a776e4b7-8221-443c-85ed-c5ee5db0c360
    Harvest Source Title DOT Socrata Data.json
    Homepage URL https://data.transportation.gov/d/26bt-cq5y
    License https://www.usa.gov/government-works
    Primary IT Investment UII 021-099281808
    Program Code 021:009
    Source Datajson Identifier True
    Source Hash a2c26559dedf3c0e5d48e983f3d8e1c6fad4b51682df8c597c174fc96c2c8337
    Source Schema Version 1.1
    System of Records https://www.govinfo.gov/content/pkg/FR-2006-05-03/pdf/E6-6510.pdf
    Temporal 2000/2024

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