Your lab’s personal performance dashboard

"We think it’s a good value because the audit, the recognition and the hands-on real time demonstrations that you get from their people. They are good at putting techs at ease."

Bowser-Morner, Inc.

Jim Fletcher, Vice President, Director of Laboratory Services Construction Services Division

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

Estimated Assessment Schedule

AASHTO re:source will resume on-site assessments (rather than remote assessments) in all parts of the United States starting July 25, 2022. We will continue to perform remote assessments for customers outside of the United States. We will continue to offer remote assessments for all laboratories that need a supplemental assessment in order to add standards to their current scope of accreditation.

We will send an email to customers in Canada, and other areas outside of the United States, when we are able to safely resume on-site assessments internationally.

Please review the Return to On-Site Assessments Announcement for complete details. 

For details on the scheduling process and procedure, please review the AASHTO Accreditation Program Policy and Guidance on Requesting and Receiving In-Sequence Assessments From AASHTO re:source.

LAP Map 5.31.23
Active Assessment Regions 
As of May 17, 2024

  • California (Northern)
  • Illinois
  • Indiana
  • Louisiana
  • Mississippi
  • Nevada (Northern)
  • North Carolina
  • Oklahoma
  • Texas
  • Wisconsin
Upcoming Assessment Regions

As of May 17, 2024

  • Arkansas
  • Iowa
  • Missouri
  • South Carolina

  • Approx. 4 months before we begin conducting assessments: All laboratories in your state/territory will be notified to submit their assessment request.
  • Approx. 8 weeks before assessments are scheduled to begin: If we anticipate transitioning your laboratory’s assessment from on-site to remote, you will receive an email with further details.
  • Anytime up to the date of your assessment: If data indicates that conditions have worsened, all assessments in a state/territory may be changed back to remote.

Please direct any scheduling questions to

If you do not see your state listed here, we have completed assessments in your area and/or do not anticipate starting assessments within the next 6 months.  You may require an out-of-sequence assessment.  At this time, our approximate wait time for an our-of-sequence assessment is 8 weeks. Please submit a request or email for additional guidance. 

If your need for an assessment is time-sensitive, please contact us, even if the schedule indicates that we will be in your area by the time you require our services.

For more information on preparing for your assessment, please review Seven Steps for a "Perfect" On-Site Assessment or watch the August 2021 recorded webinar Ready, Set, Go: How to Prepare for an AASHTO re:source Assessment.