HPMS Data Library

California Public Road Data

The California Public Road Data are available in PDF format. Click on the link to begin the download:

• 2006 Public Road Data
• 2005 Public Road Data
• 2004 Public Road Data
• 2003 Public Road Data
• 2002 Public Road Data
• 2001 Public Road Data

PDF Files require Adobe Acrobat to view them. Get Adobe Acrobat (free)

IRI STUDY

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.

• Click here to get the survey results

Other Data and Information

• If earlier data are needed, Click here to check the HPMS Data Archives
• Check other reports (such as reports from the old publication, "The Assembly of Statistical Reports") Division of TSI Library
• Questions and information about this website: HPMS Webmaster

Instructions for reviewing and updating data items (Complete listing - all items)

• Click Here

For information on file formats and how to download them:

• Click Here