Email Contacts:

Mailing Address:

Department of Transportation
Division of TSI, MS #38
P.O. Box 942874
Sacramento, CA 94272-0001

FAX: 654-6583
Calnet 8-464-6583

California HPMS Logo

HPMS Data Library

California Public Road Data

The California Public Road Data Publication is available in PDF format. Click on the link to begin the download.
2012 Public Road Data - Updated 2011 Public Road Data 2010 Public Road Data
2009 Public Road Data 2008 Public Road Data 2007 Public Road Data
2006 Public Road Data 2005 Public Road Data 2004 Public Road Data
2003 Public Road Data 2002 Public Road Data 2001 Public Road Data

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Our workshops and conferences demonstrate our efforts to keep communication open and remain accessible to our partners and shareholders. We will continue to document discussions between stakeholders and share the outcomes as we move ahead and improve our processes.



In July of 2004, a study was done comparing the methodology in a number of states as to how IRI data is gathered. A survey was taken and 39 states responded with information about the methods, locations and frequency for collecting IRI data. The results of the survey are summarized in an Excel file.


HPMS Instructions for Updating Data Items

This publication outlines the Federal HPMS Program, Caltrans HPMS Process, HPMS Data Items Listing and Codes, Caltrans Supplemental Data Items, and many Appendix additions further explaining the process.


Other Data and Information


For information on file formats and how to download them:

Simple instructions as needed.

Page updated on October 27, 2014