State of California Open Data
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State Highway Network Odometer

  • Published by: Caltrans
  • Last updated: Tuesday, August 11, 2026
  • File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The Odometer dataset is used to support accurate distance-based referencing along the State Highway Network. It helps users compare postmile values wi...

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