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

Important Announcement Regarding
Changes to AASHTO re:source Services Due to COVID-19

As of September 29, 2021, AASHTO will begin conducting on-site assessments in states/territories where available information indicates that COVID-19 conditions are safe for travel. COVID-19 data will be monitored continually until all assessments in the state are complete.

All customers in Canada and other areas outside of the United States can expect their assessments to be remote for the time-being. We will send an email to these customers when we are able to safely resume on-site assessments internationally.

Visit the Remote Assessments page for more details on this service.

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.

Map of LAP Schedule as of 10.20.21
Active Remote Assessment Regions 

As of October 20, 2021

  • Alaska
  • Arizona
  • California (northern region)
  • Colorado
  • Georgia
  • Idaho
  • Louisiana
  • Nevada
  • New Mexico
  • North Carolina
  • Pennsylvania
  • Puerto Rico
  • Texas
  • Utah
  • Wyoming
Upcoming Remote Assessment Regions

As of October 20, 2021

  • California (southern region)
  • South Carolina
Active On-Site Assessment Regions 
As of October 20, 2021
  • None
 Upcoming On-Site Assessment Regions 
As of October 20, 2021
  • None

  • 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 remote to on-site, you will receive an email with further details.
  • Anytime up to the date of your on-site 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.  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.