Project Portfolio

S.T.A.T.E. Testing has been blessed to be involved in many major and innovative projects. Our project portfolio consists of work performed on much of the Chicagoland expressway system, the Illinois Tollway system, and O’Hare International Airport. Some of our most innovative projects included those associated with the green movement including GTR, FRAP and Warm-mix asphalt.

Construction Materials Testing - S.T.A.T.E. Testing, LLC

Project Portfolio

Green Alleys
O'Hare Modernization Program
Ground-Tire Rubber (GTR) Modified Asphalt
FRAP Fractionated Recycled Asphalt Pavement
HPC High Performance Concrete
Temporary North Avenue Bridge
New North Avenue Bridge

Project Portfolio - Ground-Tire Rubber (GTR) Modified Asphalt

Recycled tires are
ground to a fine powder

In 2006, S.T.A.T.E. Testing provided the engineering for the first Illinois demonstration projects using terminal-blended ground-tire rubber (GTR) modified asphalt. Since then, Cook and DuPage Counties, CDOT, and the Illinois Tollway have placed GTR mixes.

A promising University of Illinois research study provided support for the Illinois Tollway to include GTR Asphalt in their Congestion Relief program. GTR asphalt is a "green" product, recycling about 1,000 tires per lane mile for each inch of asphalt. GTR is no more costly than polymer-modified asphalt. Also, it reduces use of landfill space for tire disposal.

Johnson Paving places GTR modified HMA

Johnson Paving places GTR modified HMA in Barrington Hills for the Cook County Highway Department (2007)