Statewide Independent Assurance Database (SIAD)

The Statewide Independent Assurance Database (SIAD) is a web application developed by the California Department of Transportation, Materials Engineering & Testing Services (METS) to allow IA staff the ability to easily submit technician and laboratory information into Caltrans' database via the internet. The SIAD serves as a central repository for statewide Independent Assurance (IA) data pertaining to IA staff, testing personnel, and laboratories. The database provides instant access to statewide IA accreditations, certifications and proficiencies. Project staff no longer needs to rely on paper records, phone calls and emails to verify technician or lab qualification. For more information about the Caltrans Independent Assurance Program (IAP), please see the Independent Assurance Manual and associated documents on the IAP webpage.

District Map

District Map in 2017