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Federal
National Bridge Inventory
Federal Geographic Data Committee —
The National Bridge Inventory dataset is as of June 20, 2025 from the Federal Highway Administration (FHWA) and is part of the U.S. Department of Transportation... -
Railroads
District of Columbia —
Centerlines of railroads or Metrorail are captured. The line is at the midpoint between each rail line. Hidden features due to tunnels, overpasses, or bridges are... -
Railroads 2019
District of Columbia —
Railroad. The dataset contains polylines representing planimetric railroads, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of... -
Roads 2008
District of Columbia —
Roads. The dataset contains polygons representing planimetric roads, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief... -
State
Connecticut Railroads
State of Connecticut —
Connecticut Railroads is a 1:24,000-scale, feature-based layer that includes railroad features on the U.S. Geological Survey (USGS) 7.5 minute topographic quadrangle... -
Railroads 2015
District of Columbia —
Railroad. The dataset contains polygons representing planimetric railroads, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the... -
Traffic Barrier 2017
District of Columbia —
Traffic Barrier. The dataset contains polylines representing planimetric barriers, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office... -
Building Footprints 2019
District of Columbia —
Building. The dataset contains polygons representing planimetric buildings, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the... -
Recreation Facilities 2015
District of Columbia —
Recreation Areas. The dataset contains polygons representingrecreation areas, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of... -
Swimming Pools 2013
District of Columbia —
Swimming Pool. The dataset contains polygons representing planimetric Swimming Pools, created as part of the DC Geographic Information System (DC GIS) for the D.C.... -
Building Footprints 2017
District of Columbia —
Building. The dataset contains polygons representing planimetric buildings, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the... -
Sidewalks
District of Columbia —
All public walkways are captured. Sidewalks do not overlap other feature classes unless they are hidden under a bridge or overpass. Cement pads around public swimming... -
Roads 2013
District of Columbia —
Road. The dataset contains polygons representing planimetric Roads, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief... -
Sidewalks 2021
District of Columbia —
All public walkways are captured. Sidewalks do not overlap other feature classes unless they are hidden under a bridge or overpass. Cement pads around public swimming... -
Street Lights
District of Columbia —
Street Light Assets. The dataset contains locations and attributes of street lights provided by the District Department of Transportation (DDOT). -
Recreation Courts 2010
District of Columbia —
Basketball and Other Recreation Court. The dataset contains polygons representing planimetric basketball and other recreation courts, created as part of the DC... -
Swimming Pools 2015
District of Columbia —
Swimming Pools. The dataset contains polygons representing planimetric pools, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of... -
University
GNIS: Oilfields, Mines, Dams, Towers, Man-made structures
Earth Data Analysis Center, University of New Mexico —
The Geographic Names Information System (GNIS) actively seeks data from and partnerships with Government agencies at all levels and other interested organizations.... -
Roads 2019
District of Columbia —
Roads. The dataset contains polygons representing planimetric roads, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief...