Qualified product list (QPL)

A database of over 1,300 construction materials that have been pre-approved for use in state highway construction.

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

The proprietary Wall Design Review process is temporarily closed to new applications, but WSDOT is collecting information on manufacturers interested in submitting new or updated proprietary wall designs for approval. Please contact the QPL engineer at qpl@wsdot.wa.gov for more information.

Search the QPL by selecting a manufacturer or a standard specification

The Qualified Products List is compiled by Washington State Department of Transportation's (WSDOT) Materials Laboratory. 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.

In accordance with WSDOT Standard Specifications for Road, Bridge and Municipal Construction Section 1-06.1(1), this website is considered to be the current QPL.

Products that do not perform or found to be noncompliant with WSDOT specifications may be removed at any time from the QPL. These products 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 products have undergone satisfactory performance evaluation.

QPL Submittals - Materials

To initiate a QPL submittal process, contact the QPL Engineer at QPL.
The following form needs to be completed: QPL Application Form (will be provided by the QPL Engineer after initial contact)

QPL Submittals - Hot Mix Asphalt (HMA) Mix Designs and Commercial HMA

HMA Mix Design Submittal Flow Chart (PDF 145KB)

To initiate a HMA mix design submittal process, contact the Bituminous Materials Engineer at 360-709-5419.

The following form needs to be completed:

WSDOT Form 350-042 HMA Mix Design Submittal

WSDOT Standard Practice for HMA Mix Designs QC 8, Standard Practice for Development of Hot Mix Asphalt Mix Designs, contains information on how to submit an HMA Mix Design for QPL evaluation.

QPL Submittal - Recycled Materials Facilities for Recycled Concrete Aggregates (RCA) – RCA Tier 1, RCA Tier 2 and RCA Tier 3

Recycled Materials Facilities Approval Process Flow Chart (PDF 96KB)

RCA Tier 1

To initiate the RCA Tier 1 submittal process, contact the QPL Engineer at QPL.
The following form needs to be completed
* QPL Application Form

RCA Tier 2

To initiate the RCA Tier 2 submittal process, contact the QPL Engineer at QPL.
The following form needs to be completed
* QPL Application Form

WSDOT Standard Practice for Recycled Concrete Aggregates QC 9 (PDF 28KB) Approval of Recycled Materials Facilities of WSDOT Recycled Concrete and Returned Concrete, contains information on how to approve Recycled Concrete Aggregates Facilities for Tier 2.

RCA Tier 3

To initiate the RCA Tier 3 submittal process, contact the QPL Engineer at QPL.
The following form needs to be completed
* QPL Application Form

WSDOT Standard Practice for Recycled Materials Facilities from unknown sources QC 10 (PDF 55KB), Approval of Recycled Materials Facilities from Stockpiles of Unknown Sources, contains information on how to approve Recycled Materials Facilities for Tier 3.

Contractors Guide for Materials Approval Submittal (PDF 1.6MB)