Sioux City: 712-252-5132

Serving the Tri-State Area

Certified Testing Services Inc - Logo

Storm Lake: 712-213-8378

Asphalt concrete

By monitoring aggregate quality, gradation, mixture composition, and the characteristics of the mix, we'll assure the quality and uniformity of the material being provided to your project. Our onsite testing and laboratory testing will assure that the project specifications are being met in the field.


With over 30 years of experience in the construction testing services business, Certified Testing Services Inc can offer you the highest quality certified asphaltic concrete inspections.

Certified asphaltic concrete inspection services

Asphaltic concrete services

  • Production, testing, and inspection

  • Iowa DOT-certified plant inspections

  • Iowa DOT QMA inspection

  • Diamond bit coring

  • Ignition and Gyratory Super Pave

We have one of the highest safety ratings in the industry. Call us today to learn more about our asphaltic concrete capabilities!

Sioux City



Storm Lake


Unparalleled asphaltic concrete testing and  reporting

Asphalt concrete