Interstate Testing Services in St. Louis, MO

Interstate Testing Services in St. Louis, MO is a premier independent testing facility that offers highway construction materials testing, hot mix asphalt performance testing, and mix design services as well as analysis of asphalt binders, concrete and aggregates for producers, refineries and asphalt plants throughout Missouri and surrounding states.


We are an AASHTO re:source participating laboratory with R-18 accreditation. We employ experienced quality control technicians highly trained in the industry’s most advanced technology and equipment.


With experience totaling over 100 years, our skilled technicians combine forward thinking with the latest technologies to create the most economical mix designs and optimize product quality throughout production.

Reliable & Efficient

Our DOT-certified technicians know that time is critical in this ultra-competitive construction industry.
Let Interstate Testing Services help you design the most economical mix to win jobs or have one of our skilled technicians optimize the quality of your product during production. We have the capabilities to send technicians to job sites and facilities to perform asphalt, concrete, aggregate, and nuclear density testing services and deliver results with accurate efficiency.