Historic Highway Plan Lines for Washington D.C., 1901-1905

1901-1905 master plan lines for proposed roads in Washington D.C. affect land subdivision rights, even if the roads are never built. The dataset is provided by the District of Columbia and was last updated on March 25, 2026. It includes multiple geospatial file formats like GeoJSON and KML for mapping and analysis.

Use Cases

• Identify properties restricted from subdivision based on historical highway plan lines.
• Analyze the historical urban layout of Washington D.C. based on 1901-1905 master plans.
• Support legal and procedural reviews for removing obsolete proposed roads from the official plan.
• Map proposed road networks from the early 20th century for historical GIS studies.

Strengths

• Data is derived from the city's official 1901-1905 master plans.
• Available in multiple geospatial formats including GeoJSON, KML, and an ArcGIS REST API.
• Has a clear, permissive license (CC-BY-4.0).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect temporal bias inherent to its 1901-1905 source period.

Provenance

Source

District of Columbia

Time Range

1901-1905

Freshness

Last updated 2026-03-25 08:18:06.416316; freshness should be verified.

Geography

Washington D.C., District of Columbia