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

    Bridge and Tunnel Entrances 2015

    Metadata Updated: March 28, 2025

    Bridge and Tunnel Entrance. The dataset contains polygons representing planimetric bridge and tunnel entrances, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO). This is a complete new capture from aerial photography flown in mid to Late April, completed on April 24, 2015. This is part of a comprehensive sensor collection effort to sychronize orthophotos, oblique imagery, LiDAR, and basemap layers. The following planimetric layers were updated: - Barrier Lines- Building Polygons- Bridge and Tunnel Polygons- Curb Lines- Grate Points- Horizontal and Vertical Control Points- Hydrography Lines- Obscured Area Polygons- Railroad Lines- Road, Parking, and Driveway Polygons- Sidewalk and Stair Polygons- Swimming Pools- Water PolygonsDUE TO THE LOW ALTITUDE FLOWN TO CAPTURE THE COMPLETE IMAGERY FOR THE 2015 SENSOR FLIGHT, THERE IS INCOMPLETE AERIAL PHOTOGRAPHY COVERAGE AROUND THE WHITE HOUSE AND CAPITOL. FOR THESE AREAS, 2013 PLANIMETRIC FEATURES WERE SEEMLESSLY MERGED INTO THE 2015 DATA.

    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 March 28, 2025
    Metadata Updated Date March 28, 2025

    Metadata Source

    Harvested from DC opendata json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 28, 2025
    Metadata Updated Date March 28, 2025
    Publisher D.C. Office of the Chief Technology Officer
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=131bd9d617dd4c0ea4eaa9e12b6ffccb&sublayer=7
    Data First Published 2018-07-19T21:07:09.000Z
    Data Last Modified 2021-12-13T18:08:25.000Z
    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 8cc6d8e3-bab9-4a38-a9b7-3b6996489b86
    Harvest Source Id 35240a53-6f59-4643-a181-df09cfde77fb
    Harvest Source Title DC opendata json
    Homepage URL https://opendata.dc.gov/datasets/DCGIS::bridge-and-tunnel-entrances-2015
    License https://creativecommons.org/licenses/by/4.0
    Metadata Type geospatial
    Old Spatial -77.1163,38.7923,-76.9115,38.9842
    Source Datajson Identifier True
    Source Hash adf0d56ec89d0d08c58559039d287463da61106b25a251483c892756e8c74d37
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -77.1163, 38.7923, -77.1163, 38.9842, -76.9115, 38.9842, -76.9115, 38.7923, -77.1163, 38.7923}

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