State of California Open Data
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State Highway Network Lines

  • Published by: Caltrans
  • Last updated: Tuesday, October 7, 2025
  • File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

StateHighways are state highways based upon the Caltrans Linear Referencing System. Each record in this layer represents a highway segment where the c...

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