Construction materials

Notice: Temporary Impact to Materials Evaluation Program

WSDOT’s accounting system upgrade will result in a temporary pause on establishing new reimbursable agreements for material evaluations from March 31 through April 15. While applications will continue to be accepted, new evaluation and testing work cannot begin until work orders are established after April 15. Some processing delays may continue briefly during system stabilization. Early submittal of anticipated applications is strongly encouraged.

Find instructions on using our construction and inspection audit system that will be used by WSDOT for all design build projects and other construction, testing and inspection processes.

Search for major construction materials used within WSDOT or have a New Product evaluated for acceptance.

Information and approvals for roadside electrical equipment used for lighting, traffic signal, and intelligent transportation systems (ITS).

Learn when a project may require a geotechnical investigation and how to request our nationally known services in geotechnical engineering and engineering geology expertise.

Notice: Temporary Impact to Materials Evaluation Program

WSDOT’s accounting system upgrade will result in a temporary pause on establishing new reimbursable agreements for material evaluations from March 31 through April 15. While applications will continue to be accepted, new evaluation and testing work cannot begin until work orders are established after April 15. Some processing delays may continue briefly during system stabilization. Early submittal of anticipated applications is strongly encouraged.

Notice: Temporary Impact to Materials Evaluation Program

WSDOT’s accounting system upgrade will result in a temporary pause on establishing new reimbursable agreements for material evaluations from March 31 through April 15. While applications will continue to be accepted, new evaluation and testing work cannot begin until work orders are established after April 15. Some processing delays may continue briefly during system stabilization. Early submittal of anticipated applications is strongly encouraged.

Access the Washington State Pavement Management System (WSPMS), and learn how we provide structural pavement analysis and design, and conduct pavement research.

Notice: Temporary Impact to Materials Evaluation Program

WSDOT’s accounting system upgrade will result in a temporary pause on establishing new reimbursable agreements for material evaluations from March 31 through April 15. While applications will continue to be accepted, new evaluation and testing work cannot begin until work orders are established after April 15. Some processing delays may continue briefly during system stabilization. Early submittal of anticipated applications is strongly encouraged.

Learn which testing methods our state materials laboratory is AASHTO accredited to ensure highway construction projects conform with the approved plans and specifications, including any approved changes.

The Request for Approval of Materials (RAM) is used by contractors to request approval for materials to be used on state contracts. Find the RAM form and instructions on how to submit. 

View testing data and the Composite Pay Factor (CPF) of any contract in our computer program that statistically evaluates materials (SAM) according to the requirements of WSDOT Standard Specifications.