For more than a century, Chicago Testing Laboratory has provided confidence in the safety, quality, and performance of the materials that form the foundation of our communities.
Our expertise is built on decades of hands-on experience in the field and the lab, giving our clients accurate results and guidance they can act on. That same experience makes us dependable - consistent communication, responsive service, and testing done right the first time, every time. It's why contractors, agencies, and engineers across the country see CTL as a trusted partner, backed by a proven track record dating back to 1912.
114
YEARS OF DELIVERING
EXPERTISE AND ACCURACY
Get In Touch
Have a question? Please feel free to reach out to us by phone or email.
P: 630-393-2851
F: 630-393-2857
TRUSTED BY LEADING ORGANIZATIONS
OUR SERVICES
Delivering Expertise and Accuracy for Over a Century
From on-site inspection to full-service laboratory testing, CTL covers every material and every phase of your project. Over 110 years of precision, integrity, and expertise behind every result.
EXPERIENCE YOU CAN COUNT ON
110+
Years of Experience
4
Material Disciplines
100%
Accredited
FEATURED PROJECTS
Real Projects. Real Impacts.
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DRESDEN LOCK & DAM
Illinois River
$48 million project included replacement of the miter gates, electrical systems, and valve recesses.
HUBOLT ROAD EXTENSION
Joliet, IL
A new bridge was constructed over the Des Plaines River providing a new river crossing for the Joliet area.
METRA PETERSON RIDGE STATION
Chicago, IL
$22 million project consisted of two six-car platforms, ADA compliant ramps and stairs, warming house, two shelters, paved parking area of 50 cars and renovations to the 130-year old bridges at Peterson & Ridge Avenues.