Products or materials for KDOT construction projects fall into three categories: 

1. Accepted on certification
2. Must be prequalified
3. Require both certification and prequalification

See KDOT’s Current Prequalified Materials List. KDOT can approve products and materials at any time for any purpose.

Producers and vendors interested in supplying products and materials should: 

1. Review the KDOT Specifications for State Road and Bridge Construction and Special Provisions.
2. Review the current Prequalified Materials List to see how your product or materials are currently being used.

Supplying products that meet current specifications 

• No Prequalification Needed: If your product meets a specification that doesn't require prequalification, it can be supplied to contractors with proper certification. 
• Prequalification Needed: If your product meets a current specification that requires prequalification, submit paperwork and samples for testing to the following address. Please include a contact name and email address when submitting. 

Engineer of Tests, Materials and Research Center
2300 SW Van Buren Street
Topeka, KS 66611-1195

Supplying products not included in current specifications 

If your product differs from the specifications and you want to introduce it to KDOT for review, please follow these steps: 

1. Submit Forms: Complete and submit two copies of the Preliminary Information for Product Evaluation Form (KDOT Form No. 1190) to the address shown on the form. 
2. Include Additional Information: Along with the form, we recommend submitting a product engineering package, marketing brochure, test data, and any other relevant information.
3. Contact for Assistance