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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    Bridge and Tunnel Entrances

    Metadata Updated: February 25, 2026

    Bridges: All bridges are digitized as polygons. Bridges carry roads or railroads over water. Outside edges of all bridges delineated. Also bridge deck locations or clear spans where deck is not visible. This includes all overpasses (bridges that carry traffic over roads or railroads) and underpasses. Outside edge of all overpasses delineated. Bridges overlap road polygons. Pedestrian bridges are not captured. Tunnel Entrances: Entire tunnels are not captured, but all entrances to a tunnel are captured as polygons illustrating the width of the tunnel. Polygons plotted around tunnel openings and any abutments or walls which identify the tunnel entrance. Hidden Bridges: Hidden bridges are features that run under other features such as other bridges, overpasses, or tunnels and are not fully visible in an aerial photograph. The locations are interpreted based on the information visible on either side of the bridge.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: Creative Commons Attribution

    Downloads & Resources

    Dates

    Metadata Created Date April 30, 2024
    Metadata Updated Date February 25, 2026

    Metadata Source

    Harvested from DC data

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date April 30, 2024
    Metadata Updated Date February 25, 2026
    Publisher Office of the Chief Technology Officer
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=c1aa6234b4df416aa319dbb78bc3e184&sublayer=9
    Data First Published 2015-02-27T21:14:37.000Z
    Data Last Modified 2026-02-20T14:33:47.000Z
    Category geospatial
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 0d66152c-bf23-4989-958d-295ef16eae7e
    Harvest Source Id b05f955a-65d6-4288-9558-15a5ebc74e36
    Harvest Source Title DC data
    Homepage URL https://opendata.dc.gov/datasets/DCGIS::bridge-and-tunnel-entrances
    License https://creativecommons.org/licenses/by/4.0
    Metadata Type geospatial
    Old Spatial -77.1166,38.7923,-76.9115,38.9851
    Source Datajson Identifier True
    Source Hash cc83d2b34d5de5e37b0b6e37baf389e9c1eb1b53d6e525e88c2e41e81d86aead
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -77.1166, 38.7923, -77.1166, 38.9851, -76.9115, 38.9851, -76.9115, 38.7923, -77.1166, 38.7923}

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