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3 datasets

State Highway Network Postmiles

  • Published by: Caltrans
  • Last updated: Friday, August 21, 2026
  • File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The LRSN_Postmile feature class is an Esri Roads and Highways Network (or more generically a Linear Referencing Method) that represents the California...

State Highway Network Odometer

  • Published by: Caltrans
  • Last updated: Friday, August 21, 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...

Public Road Functional Classification

  • Published by: Caltrans
  • Last updated: Friday, August 21, 2026
  • File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This Functional Classification dataset was exported from Caltrans Linear Reference System (LRS) on July 3rd, 2024. The LRS serves as the framework upo...