Programs that work for you

"They are rigorous, they’re about making sure our labs, personnel, and test methods conform, that they’re in compliance. They’re independent, not driven by a vendor or a construction company.”

California Department of Transportation

Philip Stolarski, Former Deputy Division Chief, DES-METS & GS 

55+ years of experience
PSP participants
samples shipped per year
laboratory assessments per year
accredited labs


Recap of 2023 Changes to AASHTO Accreditation Prerequisites

Jan 03, 2024

In 2023 the following changes were made to the AASHTO Accreditation Policy and Guidance on Prerequisites for Accreditation:

  • Added prerequisites for ASTM C1293, rule 27 [see pages 4 and 11].
  • Revised rule 14 to always require ASTM D4543 to maintain accreditation for ASTM D7012 [see pages 5 and 9].
  • Added rules 28 and 29 [see pages 5 and 11].

AASHTO Accredited laboratories must include the appropriate standards on their next assessment request form. Questions about these changes can be directed to your Quality Analyst.