Lists of products and materials pre-qualified for use on Wisconsin Department of Transportation (WisDOT) projects are compiled and maintained by the Division of Transportation System Development (DTSD), Bureau of Technical Services.
These lists include pre-qualified products and certified sources of specific materials that comply with relevant specifications. Pre-qualification testing, inspections, and evaluations; process control inspections with certification; process control inspections with random department verification testing; and independent third party plant certifications are some of the methods of pre-qualification.
Pre-qualification of products and vendors is in accordance with the Wisconsin Department of Transportation Standard Specifications for Highway and Structure Construction, Section 106 Control of Materials. Products and materials shown on the approved lists linked from this page may be used on WisDOT projects pursuant to the applicable Specification and/or Policy Memorandum.
Although approved for use, any of these materials are subject to inspection and/or testing at time of delivery. Certifications of compliance or certified reports of test as to material properties may be requested by project staff per contractual acceptance procedures. All materials are subject to rejection at any time if found to be out of compliance.
Contact information for each of the product categories is listed on the pages for the respective material. Contact that person for information regarding pre-qualification for specific materials.
These lists are updated as necessary. Dates of approval/removal will be shown on the lists for each product/vendor for reference regarding project applicability. As of January 1, 2015, data will not be removed from the lists. Products or sources removed from eligibility will remain but be shown in red with the removal date.
Portland Cement Concrete
Nuclear Density Testing
Drainage (See "Precast Concrete Fabricators" below for concrete pipe and structures)
Structure Painting Systems
Precast Concrete and Masonry
Signing and Marking