Caltrans D2 Guardrail Inventory Project

Naomi Yates
Naomi Yates

June 24, 2023

Caltrans D2 Guardrail Inventory Project

Guardrail Inventory Project


  • Preprocessed, geolocated, and recoded and refined excel data of existing guardrail beginnings and ends collected from Caltrans records.
  • Designed and built guardrail geodatabase for updating locations and attributes of Caltrans District 2 guardrails in ArcGIS Pro and ArcGIS Enterprise.
  • Performed editing and QA/QC on guardrail data to prepare it for publishing.
  • Published data layers, maps, and designed apps for field verification of guardrails for safety standard compliance.

Key Achievements

  • Project won first place in the URISA 2023 Digital Competition.
  • Independently discovered and corrected data inconsistencies and errors during data preprocessing.
  • Innovated process of geolocating data using Caltrans linear referencing Postmile resources within ArcGIS Pro.
  • Found solution for hosting offline data collection imagery, shared it with other districts in Caltrans facing same hurdles.
  • Documented project for presentation to all of Caltrans as potential cost-saving alternative to third-party data collection.

Tools used

ArcGIS EnterpriseArcGIS Experience BuilderArcGIS ProEsri Field MapsExcel

Plug-ins used

Caltrans ArcGIS Pro Postmile Toolbar


Caltrans D2Field mapping GuardrailsSafetyTransportation

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