Skip Top Navigation

Qualified Products List (QPL)

Do not submit application and money prior to contacting the QPL Engineer.

The proprietary Wall Design Review process is temporarily closed to new applications.


How do I submit a HMA mix design for evaluation under the Qualified Products List (QPL) system?  After the contractor performs their mix design testing in accordance with WSDOT Standard Operating Procedure 732, they will contact the QPL Engineer or (360) 709-5442 to initiate the HMA mix design submittal process.  Additional information regarding QPL mix design can be found in WSDOT Standard Practice for QC 8, Approval of Hot Mix Asphalt Mix Designs for the Qualified Products List, located in the Materials Manual.

The Qualified Products List is compiled by WSDOT's Materials Laboratory.  Search the QPL by selecting a manufacturer or a standard specification.  

The QPL is a database of over 1,300 construction materials that have been pre-approved for use in WSDOT highway construction. Where there is a conflict between the QPL and the contract provisions, the contract provisions shall take precedence over the QPL. WSDOT is not responsible for errors or omissions in the QPL.

Per Washington State Department of Transportation Standard Specification for Road, Bridge and Municipal Construction Section1-06.1(1), this website is considered to be the current QPL.

Products that do not perform or are found to be noncompliant with WSDOT specifications may be removed at any time from the QPL. The product will not be re-entered into the QPL or approved for use in the State of Washington until such time that adherence to the specifications can be verified and the product has undergone satisfactory performance evaluation.

For QPL Engineer Evaluation Charges, contact the QPL Engineer  at 360-709-5442 .

Effective January 1, 2017 the Department will only process applications accompanied by an initial payment, by a check, of $250. This will cover the cost to determine what will be required for evaluation of the Product. Once this process is complete; an initial evaluation package will be sent to the applicant. This package will include a request for additional payment as necessary to cover the cost of the evaluation. 

WSDOT QPL Application Form

Do not submit application and money prior to contacting the QPL Engineer

Contractors Guide for Materials Approval Submittal


Questions or comments?

Contact our office  or contact:

Maha Ablson
QPL Engineer
360-709-5442

Pat Norton
Asst. Materials Quality Assurance Engineer
360-709-5443

Rob Molohon
Materials Quality Assurance Engineer
360-709-5441